Learn all different sorts of science – see what you really love?
What makes you really want to learn more?
Use the web to find out what sorts of jobs there are. There are lots of resources now to make STEM (science, technology, engineering and mathematics) widely accessible. See if you can do work experience (I’m not sure how old you are – so maybe this will happen later).
But don’t decide on a speciality too soon – keep those options open. Some areas of science are changing so quickly right now.
It’s important to remember that it all comes in useful. Languages help you communicate with more people, grammar helps you communicate more effectively, history helps you understand how our current world came to be the way it is. All of these things are important in understanding the settings of disease. For example, West Africa is the way it is now in large part due to the colonial past. So understanding its history and the ethnic diversity of the peoples is important for understanding people’s beliefs and behaviours.