So how do I not take it personally on issues where I DON'T have self confidence?
I guess a way to do it is to radically accept
yourself? It's not easy to assert things when even we are in doubt of it, and especially so when we know what happens when we make a "wrong" decision... .
But we have to accept that sometimes we do things wrong, sometimes we make bad decisions, because we're human. We have to accept that there are certain things we want and prefer. Even if we don't get them in the end, we are allowed to voice out what we prefer.
I know this in my heart but I have a hard time practising it too... .