So make today special - you have the whole day to do exactly as you please.
After dropping your brother, go for a walk or a run. Fresh air & exercise always helps with low mood.
Then have a long hot bubbly bath. A bit of pampering. Then breakfast, not rushed, root out the Xmas marmalade from the back of the cupboard or have scrambled eggs on toast with butter & black pepper, something more time consuming than normal. Radio on, loud & cheerful.
Plan something new for supper. New flavours, totally different. Look out a recipe for a meal you have never made before. Grilled salmon with spices...whatever.
Then, decent clothes & makeup on, time for some human interaction - food shopping trip for ingredients but try the individual shops not some faceless supermarket. Have a mooch around the sales. Walk in the park, feed the ducks, Then favourite coffee bar for a cake. Chat to whoever is around. Check the websites - this time of year there are lots of free art exhibitions and open studios & gardens.
Then home to cook. Glass of wine, Music on.
Good book or decent film? Netflix? Or be brave & ring old friends out of the blue.
Happy birthday 😊