For me, any time I have had confidence, it has always come natural. I think for those with confidence, it also comes natural. Maybe there are some people who could refute me, but, I think you are who you are.
They don't call it liquid courage for nothing. I think the use of mind altering drugs (illegal or legal) can drastically change a persons personality. I say if something helps, then keep using it.
When I was in highschool, I discovered drinking a caffinated soda pop in the morning would make me a lot more social and confident through out the day. I didn't keep up with that for too long for some reason, must have not been that important, but...
I think if you are naturally a shy, fearful, think headed, low self esteem type of person, that is who you are. Many people look down on things such as alcohol and or opiate dependence, but how is that any different than SSRI dependence? As far as I can tell the only difference is in the mind of the person casting judgement.
Unfortunately opiates are no longer an acceptable psychiatric treatment option, however, I suppose my point is that, there are ways to help one get out of their shell and it's up to us to decide what level of dependence we are comfortable with and when it is becoming a detriment as opposed to a benefit.
Other than that, I've found, the best thing a person can do is just accept who they are. In doing so I think it frees you up a bit. I think you can work towards stepping out of your comfort zone, and realizations and awakenings are possible. People can change, it's just that they rarely do or can't.
I think if you are not a confident person and want to be, though, you better be prepaid for the hardest work of your life. You really have to go face to face with every single ******* little moment in which you would normally just cowar and avoid something.
You have to talk to the girl/guy you are afraid of and be willing to make a complete ass of yourself AND get rejected. You have to stand up to that person. You have to stand up for yourself. You have to say no, mean it, and not feel bad about it... The list goes on and ******* on. I have made small attempts myself, but over and over I find I give up after a short while. Most of the successes gained just lead to even harder to deal with situations that became the same old failures all over again.
That's my experience. If I want to be confident I can take an opiate, it's much easier and highly affective. However confidence just isn't important enough for me to work that hard for it, I guess. I'm just not that interesting of a person any way. I don't have too much to say. I mostly just think a lot.