I am trying to make my career aspiration and looking for ideas in order to write the best one

Does not work like that. There are 100s of thousands of jobs, and a person has to pick one to aspire to that they like the field. For example I have a fear of heights, so a job as lineman for a electric company or a person who works on TV towers would be out.

I will "assume" this is some sort of homework assignment as the way it is written. Do you like animals, something in or being a VET may be good. So you decide what you life, not what we like.

My advice that I always give is to think of a high tier job that you want to see yourself doing when you're old. Then figure out how to get there, and what the bottom rung of the ladder is that you need to climb to get there. Then, if you decide it sounds like a good plan, start climbing.

So, as an example, if you want to be an astronaut, you need to read up on the lives of several astronauts and figure out what they did starting that pushed them in that direction, and make your short term aspiration the closest rung on the ladder, and your long term aspiration the last rung on the ladder.