You have several planets that are especially strong by virtue of being in their own signs, so part of the answer should be that you can succeed at whatever you set your mind to!
However, your sun in Virgo is in an intercepted sign, meaning that Virgo is enclosed by two other signs on the house cusps. A planet in an intercepted sign can feel hemmed- or boxed-in, as though it never gets the recognition it deserves. Since your Virgo sun is your sense of self, you can have a life-long identity crisis, with this placement! This doesn't mean that there is anything the matter with you, merely that it is hard to get a clear sense of who you are.
Because we usually like to think of our career as an extension of our self, career matters become befuddled a bit, as well.
To follow up on Amit's point, with Sagittarius on your midheaven, we look to Jupiter for vocational info. However, Jupiter in Pisces is also in an intercepted sign, as these come in pairs with a sign plus the sign opposite it. So you're getting a double whammy here.
I think the best thing is just to recognize that this may be going on in your life, and then not expect a career to be truly about your personal self-expression. No job would feel like "the real you." However, you can still be financially successful and a blessing to other people, regardless.
Your chart suggests that you have some practical artistic ability (graphic design?), are good with your hands (angular Mercury in Virgo,) and have a deeply caring emotional nature (Cancer moon.) Virgo and the 6th house are associated with health care. So I'll go out on a limb and suggest physiotherapy, massage therapy, or art therapy. If you don't go into an arts or crafts field to earn your daily bread, hopefully you can pursue it as a hobby.