I would suggest a pet, if animals are your thing. Cat, dog, fish, bird, hedgehog, whatever works for you, your schedule and your budget. After I attempted to take my own life four years ago I had a very difficult time trying to figure out what would make my life meaningful and worth continuing. For me, it was my family (well, really just my mother) and my pets. I cannot leave this world when my cat needs me. Some days are worse than others, but life makes more sense when I stop thinking about me, and I start considering those in my life that I have an effect on. All the other comments here have very good advice as well: stay busy, find a hobby, think positive, be mindful, and all that jazz.