Remember that you don't have any choice as to the "time". You are going to be "going through" your senior year and you might as well use that time? Find something that interests you or some goal for 5 years from now and twist what is happening in school to work for you instead of just being a chore you have to do. If nothing else, it will be good "practice" for other hard parts in your life, and there will be other hard parts, practice using your imagination and sense of humor, intelligence and other "good" traits you have so you get in the habit of using them instead of just avoiding. Everything you do becomes a habit so if you do "nothing" you get in that habit whereas if you brush your teeth every morning and make your bed, you get in that habit? Think about it and work on habits you want rather than just accepting negative default ones.