<human>: Hello guys, I just need some advice and to be able to get this off my chest.

I have just come out of a 3 year relationship, myself a woman (23) he being a Male (30), the longest relationship I have ever had. I pictured myself being with him for the rest of my life.

He had a daughter to which I made feel like my own, she called me her step mum and everything was great.
Over the last couple of years though, I have been dealing with depression and anxiety. It had got quite bad. I've just changed my medication in the last couple of days also, I'm very sensitive and trying to control myself best I can. 

This effected him and it also effected me, but it got to the point where it was too much for him and he left, he needed to fix himself.

He decided to leave and now after starting a new job 2 weeks ago almost to date I will be finding my self traveling 3 hours a day (to and from, I'm committed this job, it's all I have left) to work as I have had to move in with my family again until I can find a house closer to work, I even had to leave my dogs and cat behind until I get a place suitable but he will be looking after them until I can get them which really helps.
I love him, I know this is for the best and I'm trying to be strong but... We were even meant to be going to Tokyo in August also(he paid for everything, he is such a wonderful man.)

I just need to know how to deal with this. How to move on (yes I know it will take time) and how to deal with the inevitable new relationship that will some day come. 

Please reddit, I need your help.

Can you succinctly summarize the text in 1-3 sentences?
<bot>: 3 years in a relationship to be left because of my depression and he hasn't felt the same way in a long time.