Here are some FAQ to help you determine the answer to the above question.
1. Do you like working with children?
2. Do you want to work in an environment where everyday is different?
3. Do you have a lot of patience and understanding?
4. Do you really want to help students get the best education that they can get?
If you answer "Yes" to 3 out of the 4 questions above, then a teaching assistant career maybe right for you.