Fields guide
Explore your interests before college with real experiments.
You do not need a final identity before you apply, choose classes, or tell someone what you are interested in. You need better evidence than a vague feeling or a list of job titles.
Make the subject tangible
For each subject that pulls you, do one small task that resembles the actual work: annotate a research paper, build a tiny program, recreate a design, analyze a local problem, or explain an idea to another person. Reading about a field is useful; participating in it tells you more.
Talk to the work, not only the label
Ask people what they spend time doing, what beginners misunderstand, and what a satisfying week looks like. A major name cannot answer those questions; people and projects can.
Compare your evidence
After each experiment, record what was difficult, what you wanted to learn next, and whether you would return voluntarily. You are looking for a direction worth investigating, not proof that you will never change your mind.
Start a field or read how to choose what to study.