Just some ideas that popped to my mind...hth
Organizing/Cleaning/Rearranging- Give your nest a new look, scent and arrangement. Give your eyes something new to see when you come home. Do the same for your closet.
Hobbies/Community Classes- It can either be something that you've never done before and always wanted to learn OR it can be something that you used to love but stopped doing it. There's so much such as sewing, cake decorating, learn a foreign language, instrument, etc.
Reading- Because it involves the mind...your mind will hopefully be consumed in a really good book that you won’t have time to think about less important things. Go to a bookstore or library and look at shelves and shelves of books that may interest you. If you're a believer of God, the Bible is an awesome book to read daily.
Solo Outings- Grabbing a quick bite to eat, a cocktail, shops, movie, anything. I know this is a two-edged sword because it can either make you more depressed or on the bright side, it gets you in touch with your best friend…YOU. I can’t describe the feeling but it’s a great balance to occasionally enjoy some solo time.
Writing- Journals are an awesome way to unload the mind and get in touch with your feelings. When your single , especially when your single not by choice, there’s nothing wrong with feeling in funk once in a while, you’re human, so let it out in a way that allows you to let go and make some progress emotionally. Writing is one of those ways…even blogging is good.
Self-Maintenance- Small things that cater to your personal needs…whether you pay for the service or pamper yourself…do your nails, hair removal, a cut or new color, keep up with your brows, etc. When you look good, it does help to feel a little better.
Working Out- No gym required, go to the park or stay home and use videos or even Instagram for some ideas.
Volunteer or just help a friend in need- Whether it's your time or just giving a listening ear, often times when you lend yourself to others, you have little time to remember that your'e single or broken-hearted.
Stop Being busy- I learned that one from my therapists...Sometimes its okay to stop "staying busy" and just internalize or assess how you're really doing. Are you okay? Are you hurting? Are you disappointed? Are you just having a bad day? Assess it and then you'll know how to deal with it. Sometimes "staying busy" causes us to avoid or not deal with how we really feel. So an occasional moment of doing nothing to "stay busy" can be beneficial. It may involve tears, just laying in bed, just sitting on the porch alone, or praying deeply to God; whatever it involves it can feel very refreshing afterwards. And best of all, overtime, you'll notice that you feel better and you can look back at the progress you've made in accepting your singleness in a more positive and productive light. (I hope this makes sense)