Hi Mike,
The best one can do when starting a career is to find out as much information as possible on the chosen profession and the opportunities it might bring. This applies to everything one does, be it work, business or investment opportunities. (ie research and due diligence).
Asking for advise in this forum is part of that research but don't base your decision solely on the responses received herein. You will find many negative viewpoints in this forum and in many cases justifiable criticism of working conditions but this alone is not justification for basing your decision of a career path.
There are pros and cons in all things and the 'green grass syndrome' is extremely prevalent in this industry.
The best thing you can do is study and get yourself physically and mentally prepared for your future career. Work on building a positive mental attitude and take the opportunities that present themselves.
Many of us had to work our way from scratch without the opportunity of cadet programs or scholarships. Many had to work double jobs to pay for flying and to live in undesirable places in order to get those extra hours and experience that would lead to a better job. So the current pilot shortage is opening up many opportunities for new comers.
The aviation industry has changed substantially over the years and in your lifetime will continue to change. At 19 you are at the start of your flying career. One of the best things about the current aviation industry is that if one is not happy with their current employer there are always opportunities elsewhere.
All the very best..