Let not talk about 'What Ifs' here. It doesnt make sense to keep talking about what if i had done that, done this. What's over is over.
What I want to discuss here is. 'IF'
Are you seriously happy with your job? or was it because of desperate measures and you are forced to do this job? IF, 'IF' you have 50K, or given a Scholarship, would you take up a course and have a change of job? 'IF' so, what would you study and change your job to?