What are your safeties?
Depression is very common. Some people feel that it might be more common among very smart students. However, it is not obvious to me whether Harvard or any “top 20” university is ideal for a bachelor’s degree for someone who has struggled with depression. Highly ranked universities can be stressful. Some of us can handle this when we are young. Some people are better at dealing with this when we are older and more experienced in life (such as for a master’s, if we ever decide to get one).