Affiliate Marketing Secrets

I’m a novice at ANSYS and ABAQUS, but I really enjoy working with computational software such as SolidWorks and ProE. I’m an introvert and hate working in groups and presentations. Im quiet, modest, humble, hard working, anxious, and rely on my perseverance to get things done. I have a mechanical engineering bachelors degree and am EIT certified. Ive not been happy at my last jobs (medical devices), and I wish I was more “free” from the burdens of red-tape, meetings, presentations, and consulting. FEA to me almost sounds like a skilled trade, a niche I can own and deliver, but I don’t know where to begin. Get a masters on FEA? Teach myself via books and software? I dont want to go into FEA if someone with an associates could have taken it. I like the potential that FEA has in that I can work from home almost like a contracting service. I also like how most FEA softwares can be integrated with various CAD software.
Can anyone give me a starting point? A salary range? Any plans and suggestions or recommendations about this career path? Im already 25 and I dont want to grow too old before I make a career change!