You say that for once you wish YOU could make a relationship last....
It takes two to do so, until you avail yourself to a decent guy, there's not much chance of that happening.
One person does not s lasting relationship make.
Yes you've been hurt, we've all been there, it sucks wet rabid balls, but you can either wallow in your grief and blame yourself for every rotten man you've come across, or you can use the pain and the anger to motivate you into action.
Yes, pain and anger can be converted into energy.
That action being discovering what it is you need to do to attract and choose the right type of man.
The sooner you get started on the work, the sooner you'll see results.
Take care