The compliments you give show what you notice. Train yourself to notice good things.

What you praise shows where your attention habitually goes, and attention can be trained. If you mostly notice what is wrong, that becomes the standing lens, and it gets pointed at you as often as at anyone else. Looking for what is good is a practice rather than a personality trait you were issued.

Say one specific thing you noticed to somebody every day this week, about effort rather than appearance where you can. Watch how it changes what you start scanning for. The habit runs inwards as well, which is where it does the quietest good.