My anxiety makes it extremely difficult to make decisions and take responsibility. This makes working and especially working alone very troublesome and causes more anxiety. 

Any time I have something to do that I know 95% sure I'm doing it correctly I just have to ask a colleague for a confirmation. This might sound bad but i think I just need someone to share the blame if something actually goes wrong, to be able to say that there is someone else who would've done things wrong the same way.

The worst part about working is that pretty much any decision is a decision made for other people (the customers) and I can't handle taking any responsibility even in my private life. 

Anxiety has guided my decisions and my life for so long and currently I'm having a tougher period after some better times. I'm just getting tired of this.

We've come to the conclusion with my therapist that most of my anxiety is probably caused by fear of failure and making mistakes. Are you guys facing similar problems in your working life/life in general and how are you dealing with them? Any advice is welcome, thanks.