Success in any field doesn't come easy. You need to have about 50 times more opportunities than you are capable of handling before just one becomes actualized. Creating opportunities is done using a process known as "lead generation".
Lead generation is a perfectly hostile, clinical term for something that's actually common-sense and normal. I imagine teams of marketing experts drawing up pie charts in Powerpoint presentations to explain the term when it's easy to understand using a real-life analogy.
Let's say you want to meet up with girls. You can start by approaching the one you like on the street and pouring out your heart and soul to her. In case you've never tried it, the most common response is one of shock, surprise and evasion. Girls don't want to deal with your problems and will typically just look to escape the awkward situation. If you are completely immune to shame and live in a big enough community where you can get away with this, you'll soon realize that you're expending too much effort for no return. Instead of spending, say, an hour to emotionally assault a girl, you could approach 60 of them and spend a minute on each. How about going even faster and approaching 600 girls, spending 6 seconds on each? Now we're talking volume.
What do you think this kind of approach would look like? You have just enough time to say "hi", smile and drop a one-liner. By constantly optimizing your approach, you're paring down the emotional and verbal crud, leaving you with the most entertaining material. Not just that, but you immediately notice signs of displeasure or rejection, preemptively bailing out before there's trouble.
Now, let's suppose you've actually approached 600 girls in an hour and asked each of them for a phone number. Again, if you've never tried it, you should know that girls will often give a fake number or outright refuse to reveal it. In my estimate, approaching 600 girls in this manner would yield 12 phone numbers, meaning you'd have a 2% success rate. Note that this includes fake numbers too.
Obviously, 12 phone numbers gives you something but you're still nowhere near a contact, there's no guarantee the girl will reply or that she will show anything except passing interest in you. How is this related to success? Customers in any niche behave in exactly the same manner: they are disinterested in whatever it is you have to offer, they don't want a long-lasting relationship with your business and won't buy whatever you're selling.
There is one positive effect of meeting up 600 girls in an hour – outcome independence. When you're fixated on any given girl, you'll already start imagining you two together, happily every after with a white picket fence, but when you're approaching hundreds of them, you'll become fun, lighthearted and completely immune to any poisonous barbs. Girls will throw mean comments at you and you'll deflect them like a ninja, without spending a minute to consciously consider them. The same applies to having a business.
When you have this kind of emotionally neutral attitude, you can actually start noticing the needs of girls you're coming in contact with. Over time, you'll start asking them: "How do you feel?" and "What do you like?" If people like something and you have them talk about it when you're present, you're evoking these positive emotions and they start associating them with you. In short, all the anxiety and awkwardness disappears because now you too become a person they like. The exact same principle applies to business as well.
Even if a client doesn't want to maintain a relationship and explicitly says "please don't bother me again", it doesn't mean you have to break off contact for good. When you notice the relationship is turning sour, try to end it on a positive note and with an attitude of "it's nobody's fault, we'll just take a break for a bit". Try again a bit later and even explicitly ask "did I do something wrong?" Most people enjoy doling out criticism, meaning they can often exaggerate but you want to find a common theme to all the criticism you're getting. Find out your weak points and improve on them. If you ask for feedback and sincerely work on improving your soft spots, you'll find your stride and have a seamless communication manner with everyone through all channels.
People can change their mind and you'd be surprised how people can suddenly start liking you where they previously showed negativity; this only applies to cases where you've ended things on a positive note and they've had the chance to re-examine their behavior. Lashing out achieves nothing and you will find it impossible to change the other person's attitude or mentality by any means, let alone a hostile, accusatory and emotional assault.
Your goal should be to invest small amounts of effort in the maximum number of connections and see which one returns the investment, meaning to groove the contacts where you're getting something in return but still never burn any bridges. Over time, you'll have a contact list of people you've met over the years that had an initial positive impression of your character and skills, opening you new opportunities for personal and professional advancement. When in need of something, go through the contact list and politely inquire about help.
Lead generation is such a powerful concept, yet the name undersells its utility. Our brain is still working as if though we're stuck in the Dark Ages, with just one pretty girl or business opportunity in the entire borough. You have many more opportunities than you could ever use, but you need a system to consistently recognize and manage them, which is what lead generation is.