My ex has some health issues i.e. highblood pressure stressful job low self esteme and binge drinking. He said he needed to work on these things and if and when he straightens them out he'll see what I'm up to again we were only together 4 months and spent a lot of time together. I miss him so much and in my eyes still think (besides his flaws ) Hes an amazing beautiful soul. What should I do; oh and said to me when we broke up that he didn't want to see anyone else, just wanted to be alone.

Dealing with ones self is a very big job, so let him do what he has to and you do your thing.

Sorry, there is no telling how long it will take to get his act together, but be glad he let you down gently.

Don't put your life on hold for him,hopefully he will sort himself out,but that's no guarantee he'll be wanting to if back together again in the future.
Live your own life and move on.
Good luck.