No decision is also a decision
Do or do not. Go or stay. No matter what, you are making the decision. You are the one choosing whether to do something or not, not someone else. No decision is also a decision, and sometimes it’s a good one.
This means that you alone are responsible for the implications, good or otherwise. You alone are the one for which these things matter most, you alone are the one who has to live with these decisions.
Whatever decision is made, you made it with the best knowledge you had at that point in time. Don’t beat yourself up for a ‘wrong’ decision, think about how you can make it the right one in the future, and move forward.