Drawing shouldn't be a comfy chair to sit on, it should be done standing up, your mind should be uncomfortable at first, this is because your brain has never worked in this area before, by drawing continuously, new neurons rip open new paths enabling you to access parts of your brain that is dormant, the more you draw, the larger that part grows.. ultimately, you need to stay aware, stay focused, learn to listen to fellow artists, learn to observe their mark-making, learn to drop your ego and to admit that your work needs improving, a good artist is NEVER satisfied with their previous work, they may feel it's 'good enough' but each work teaches you something new
final thoughts; just go to your local museums, get close to a painting and study the brush-strokes, smell them, experiment with paints/pencils, watch tutorial videos, join art groups, but the most important of all, just draw something, you'll know how to draw realistic art in the future if you apply yourself, if you know your stuff, you don't need to trace from photos, your mind knows where everything goes.
If you learn all of this without going to university, don't waste your money going to one, almost nobody who looks for artists to commission from needs to see a qualification..
The only time you need an art degree is if you plan on teaching, don't believe the hype that creative qualifications gets you places, it almost never does, people seek raw skill, that alone with get you places. use that money instead.. on renting a cheap studio or buying art materials.