How can I stop being a procrastinator? Did irresponsible men turned serious after marriage?

I thought I do things on time. But recently realized I am the worst procrastinator. In 2019, I decided to write or post it in freelancing website to work on a simple webscraper (2 weeks worth of work). If it had been done, it would have been very useful for my personal career growth. But till now I didn't post it. I was always scared to negotiate TC as I'm in last cycle of getting PERM and now I'm done with it. But I wanted to learn about RSUs, ISOs, NSO, AMT etc., but those are boring topics to me and I kept procrastinating. In fact until 2019, I did file tax returns for 3 years prior to that on time, because I knew IRS owes me money and I did all 3 years together in 2019. For 2020, I did it on time. But missed 2021. I'm supposed to take driving exam to avoid penalty to my driving license, but I haven't done that yet. When it comes to work, I work by mood and how interesting the project it is. I have got promoted and have great rapport in team etc. But sometimes, due to loneliness or if I don't get response from my crush, I miss sprint targets. But it had happened twice and I feel bad. Now I have become numb to girls rejections/not getting messages. 1) How do I stop being a procrastinator? I'm in early 30s and I can't be irresponsible. But I can't see the change in me. How do I overall become a non-procrastinator? I watched TedX videos, tried 2min rule. Nothing worked. 2) Sometimes I feel getting married will make me more obedient and disciplined. I have never been in a relationship. But also I might hate myself or could be my ego that I can't fix me by myself. 3) I also wanted to work out and have nice physique, but no progress there. I'm skinny fat and 5'11. Please help. To recap, there are two questions and I have connected the dots. Fixing my procrastination and becoming overall a serious grown up man. #mentalhealth PS: I did talk to two psychiatrists. One in US and another in home country. Nothing worked.