How do you know if you really changed as a person, or if you are just in a different mental state?

I can really get in my head sometimes and doubt my choices or give myself what ifs and over think myself almost to no end.<br><br>For example, I’m 26 and have been feeling really convicted in my faith in the last 4 years. I used to be overweight and went through several diets on my own that didn’t work. When I joined my gym, I got a trainer and have been using my gym for a few years now. I cut out pretty much all soda and I’m on a different diet. The results are anything but low and behold, how long can the results last? I’ve been able to keep them going for years, and I’m in the best shape I’ve ever been. I’m not consistent all the time, but I’m consistently have more consistency.<br><br>I’m not a athlete, but I’m a trainer at my gym. I’m direct and tough when it comes to training, but I also care about each client and will give them extra attention or help if they need it. I also give advice, although I’m still figuring a lot out for myself. I work out regularly and started getting into Brazilian jujitsu. Although, I struggle with consistency at times, I try not to let it get to me and I usually can motivate myself to not give up. I have also started incorporating mindful practices during times of struggle and try to live in the moment.<br><br>I also try my best to be a husband and father. My family is usually my last priority or if I’m lucky, second to last. I’m very critical of myself when it comes to being a good husband and father.<br><br>I know that I have a tendency to over think things and often find myself in a state that will almost bring me to a low. I’ll sit on my couch and contemplate if I’m just being delusional and if I have truly changed as a person. Or, am I just in a different mental state and I’m pretending that I have changed? If I really am changed as a person, how long can I maintain it? A day, week, month, year…two years? <br><br>What can I do to feel more confident in knowing that I have changed?