So you want to be a "insert profession here" and to have cool things like "insert professional accomplishments here" under your belt but you're afraid you're not good enough, you don't have the skills, or you're inept at it?
Practice. Practice. Practice. Practice. Practice. Practice. Practice. Practice. Practice. Practice. Practice. Practice.
Practice until it hurts.
Practice until it bleeds.
Practice even if you don't want to.
Practice even if you feel like it's pointless.
Practice with friends.
Practice with reading material and references.
Practice until you're tired of practicing and then push through that and practice some more!
Practice and don't give up.
Practice until you see your goals come true then set new goals and keep practicing!
Seriously I can't say it enough. For some reason people think I'm a good artist; truthfully I feel like I have a ways to go before I can achieve that status. The only reason I'm at where I am now is because I stayed patient and practiced.
I feel that anyone can do anything they like BUT they have to be willing to practice to obtain those skills and practice HARD at it.
When I was little I never thought I'd be drawing like I am today... simply because I thought I was no good at it because I couldn't sit down and crank out something amazing after only one attempt. I thought "Well geeze I can't draw this in one attempt, with no references, or clues to how it should be drawn... I must suck!" I had no drive to see it through because I thought that if I can't do it right the first time then I must be no good at it; period.
Practice takes determination and patience. Most people aren't born with amazing skills they get it with years of training and tons of practice.
If you have a dream or passion that you want to follow but you're afraid that you're no good... all I can say is... PRACTICE! For me? It literally took me tons of practice... most often only having time during the late night/wee early hours to practice but I did it and i'll continue doing it.
With that said, there's nothing wrong with taking a short break to relax here and there. Sometimes life gets down on you or things are just moving to fast and you need to take a break to recharge the juices.
We all fall off the horse now and then; what matters is we eventually get back up on that horse called "practice" and keep on riding towards our goal.
Now get out there and practice!