The Ball is certainly in your court, your call.
If you have job at the moment that has greatly rewarded you financially then go for it. At your age though, don't even consider part time /distance learning.
You would need a full time course, which will be very intensive to say the least, especially if you do not have a technical backgroud, engineering or computers for instance.
You then need to fly some hours preferably say at a Parachuting club on a Porter (turbine time), Islander ( twin time) or a SkyVan/Twin Otter (twin turbine time)
There will be stiff competion for these posts, virtually no pay but worth every hour in your log book. QUALITY TIME.
Its very unlikely that you can do all this and hold a full time job, unless its your company and you have guys working for you and you still collect a paycheck any way.
But all said and done, I have found that determination, perseverence, enthusiasm and VERY IMPORTANTLY, a healthy bank balance will stand you in good stead.
It may well be worth considering doing your own type rating once you've got that far. I normally would be against that though for a veritible amount of reasons but at your age it may well help. Don't think that just coz you went and did a 777 rating, BA are going to employe you.
If you go down that route though, consider very carefully which rating you do. Its got to be one that will realistically give you the best chance of securring a job.
It is not impossible but extremely HARD WORK.
Go for it if you can.
Good Luck