I think about a lot things...and normally I don't get to bothered by what I learn.

Not today, I noticed how people tend to doubt themselves.

They doubt their skill,
their beliefs
their courage
the everything that makes them up.

Its so very selfish...to hold your self back. To be afraid...

"I'm not a good artist/writer/worker." This is doubt, and when you say this you reveal how very selfish you are. If you were selfless than no one would hear those "I's" in there.

Confidence helps conquer this. Instead of saying "I'm not_____" say "I'm going to improve on ____ to make myself better." Here your not just helping yourself, your helping others by encouragement and modeling this behavior.