Confidence = success?

I need to have more confidence in myself...
there are way to many ups and downs when it comes to what i do...
and lately i'm beginning to realize all of these ups and downs are the result of the lack of confidence i have in myself...
I need to start believing in myself
I worry to much about things that dont really matter in the end...
there are no excuses...
I'm beginning to realize that just failure doesn't mean its over...
I believe in working hard...over and over
I get angry with people who say..."you either got it or you don't"
some people need to experience failure...
I know looking back i've failed in alot of things...
but that has never stopped me...
yes, I might have taken longer then others but that doesn't mean im not any better then those people...
if anything, my struggles may have even made me stronger then those around me...
i think we should all aim high...as high as we can...
nothing is impossible if you work hard...
and time is just time...
in the end i want to be able to say...at least I did it..everything i wanted...
even if it takes me 30 years haha...
embrace all the hardships...the struggles...the disappointments...
especially if you are an artist...
because these things will eventually mold into kind of art you make and what kind of artist you become...