There are tests that will reveal your career aptitudes. You may have an employment agency in your area that can help you with this.
The following articles offer more advice on pinpointing just the right job or career when you have ADHD, too:
Wanted: Career Confidence
How Can I Find an ADHD-Friendly Career?
18 Questions that Reveal Your Ideal Career
Penny
ADDconnect Moderator, Author & Mentor on Parenting ADHD, Mom to teen w/ ADHD, LDs, and autism