A big part of being happy is being excited. Be excited for everything-making a cup of tea, decorating your future apartment, seeing a friend again, falling in love unexpectedly, the next episode of a show you like, finishing something stressful, buying something you've been saving up for, a new album, sunsets, traveling, road trips, and the feeling of going to bed after a long day. Think of something to be excited about and daydream about it often when you're sad.