Yes, you need to do something, since you say your confidence is low. And that's unwarranted since for sure you are good at a load of stuff. One thing you could do would be to expose yourself to more positive messages. This could mean, for example, positive self-talk. There are dozens of books on this -- e.g.:I this i just need some reassurance or something, i dont know, maybe a penpal of support or something, just to keep me on track!
You can even record affirmations and play them back through headphones.
Try listening to some really positive people talking and discussing their strategies. The guest interviewed here is one of the most positive people I've ever heard and has has some great tips for "getting rid of head trash" and enthusing yourself. Really strongly recommended:
18 Inches The Difference Between Success and Failure w/ TD 03/20 by Underground Wellness | Blog Talk Radio