I dated a guy long ago who had a really hard time quitting pot, but he had a new child, no motivation, smoked every day, and wanted to quit.for his then wife and daughter. He told me that he went to therapy to quit and had to keep a very strict schedule and to do certain things especially during times he had used pot, such as as soon as he woke up. It worked and he was sober by the time I knew him. Along with that, and he credited giving up pot, he had his first really well paying job ever so that he could support his daughter. He was 35 when I spoke to him, and he had never worked anywhere except carnivals until he quit. He said the psychological addiction to pot was very bad and it was hard to quit. But he did it without rehab and he finally was able to grow up, although he feels using pot for so long gave him memory problems. Whether it's true or not, I don't know. These were his words though.
I hope you stop using this crutch, pot, while you are still young. Pot will only kill your motivation and keep you from becoming the grown man you were meant to be.
You have good insight into yourself. That's huge. Here's hoping you do what you know is best, even though it probably won't be easy. Good luck!