The trouble I have is that you have to start with a certain selfishness of wanting to improve your social skills even if it makes other people's days worse.
Like I'm not the most charismatic guy, and I know that if I try to make any sort of non-trivial conversation with someone I don't know well I will make them uncomfortable. Men will be bored or think I'm crazy, women will think I'm hitting on them, and I don't really feel comfortable using them as guinea pigs for my social development.
I'm all for pushing past my personal comfort zone to better myself, but when my self-improvement comes at the expense of others I can't help but hesitate.
Just consider the fact that if you’re lonely, doing more of the same isn’t going to help you. It’s easy to be dismissive, but you’re going to have to push your comfort zone to find change.