Sometimes it can be easy to look back at your past and question yourself. Question if you did the right thing or the wrong thing in that situation. You can not beat yourself up for the choices you made in your past. You made the decision on who you were and what you knew at that moment. As humans we learn from choices we make in our lives, even with ones we thought were bad decisions. With time we grow from mistakes in our life. You will grow.
Trust yourself and the journey you are on. Do not make yourself a burden.