Long Distance?

Hi ladies! So my ex boyfriend and I broke up a little over 5 months ago because I moved across the country for professional school. I wanted to try long distance, but he wasn't able to commit that way (we'd been together 8 months and he has some baggage from a pervious relationship). We tried being friends but that didn't work too well for me as it was just too hard to pretend I wasn't falling apart. The not talking didn't work and dating other people didn't work either. 
We decided to talk about trying long distance. We both have just over 3 years left our degrees left and switching universities isn't an option. We're meeting up in a little over a week over our university reading week to talk about things. Does anyone have any advice for making long distance work? The idea is for us to come up with a sort of plan and try to see if we can make it work. Has anyone had any success with long distance? I'll just mention that we're in our early 20s and neither of us have a lot of money for travelling back and forth (plus with school it's just not possible). Your advice is really appreciated!