I have been living in Thailand now for 2.5 years. I’ve been working off and on during this time, part-time and full-time. I had some fight camps where I trained full-time too, so I have a good comparison between both worlds. Most fighters chose just to fight, and they often ask how I balance the two.
I truly believe that you can have a career AND fight on a very high level. There are caveats, as well as limitations you should keep in mind, which I am happy to share.