you can start with little projects, search in the internet, or some youtube videos about things you may like, i leave you this page where you can find how to develop many little mechanic projects to start in
Question: Do you like working with your hands? Do you like solving puzzles? Do you like learning how things work? If so being a mechanic may be a good fit for you.
I strongly recommend going on YouTube and searching for videos like "what's it like being a mechanic" or "5 things you should know about being a mechanic".
I myself am not a mechanic, or at least I'm definitely not an Automotive mechanic. But I work as an Mechanical Engineer and I have been trained as a Manual Machinest so my field is somewhat related for what it's worth.