I've noticed how easy it is for someone to change how I feel about something. For example my clothes, I wore a t-shirt today I thought I wouldn't look good or someone would say something about it being bad but I got complimented on it. 

It was real easy to be confident in the shirt after but I also realized the same thing could have gone in a negative way and if so I probably wouldn't have worn that shirt again.

 I like the shirt I just don't want to be influenced by other people and go off of other peoples opinions but the shirt thing is only a small part of how my life goes. I'm constantly being influenced by people with everything in my life and its like I can't be myself. 

So my question is: how can combat this and be comfortable being me?