<human>: Give me the gist of the text in a nutshell

I'm 32, she's 25. We were together for 7 months, but spend most of the last 4 or 5 arguing, mainly because I was so obviously unhappy with my career in Tokyo. I have lived there for over 2 years, but was becoming increasingly uncomfortable with the city, because of my difficulties finding the right work and the feeling that my career objectives were falling behind. I made the difficult decision to leave and come back to Australia, and hoped that my girlfriend would either follow or we could work something out after the dust had settled.

I completely realise the difficult position this put her in (she's French, but much more comfortable in Japan than I was) and despite all of her friends telling her to leave me, she has tried to be strong and see a possible future for us down the track.

I've been back in Australia for 24hrs and I feel nothing but regret, and desperately want to get back there and be with her. Regardless of how I feel about Tokyo. I feel like such a selfish asshole.

I realise I'm missing important details here, but I'm just trying to get the bulk of it out there. Happy to answer any questions to fill the gaps. I basically know I'm going to work my ass off to get back on my feet and get back there asap. But I need to hear advice from anyone who has been in a similar situation (either side) and managed to make it work.

Thanks
<bot>: I left my girlfriend in Tokyo so I could move back to Australia and focus on my career. I immediately regret this decision.