Again, obvious, but important — take yourself out on a date, seriously. I am planning on a little dinner for me, myself and I. On paper this might seem a little lonely, but the art of dining solo is one of the greatest treats you can give yourself once you get over the first time. A book, a glass of wine and some good food can really be the ultimate way to spend some time with yourself and often a refreshing chance to be at peace with your own company.
Now, I'll be honest I am not planning on doing this on Valentine's Day itself nor the weekend, but mid-week I'm going to Rochelle Canteen. Conde Nast Traveller is a fan of this spot for a solo-date too and the menu isn't inexpensive but it isn't wallet busting either (starters around £10, mains about £22, and a glass of wine under £10, so if played right you can eat and have a drink all in for under £45).
This doesn't have to mean dinner, a solo date can be anything that brings you some joy, an art gallery visit, or just a good wander around town — whatever it is, book some time in for you.