Always invite yourself, because then at least you get to be somewhere. Honestly who cares if they don't want you at their birthday party when there is free cake. You can't have your cake and eat it too.
Or they get locked in a mental institute and never see the light of day again. Then their work gets recognized like a hundred years later. It is said that most success comes post mortem, after all.
If you are happy all the time, or sad all the time, something is probably wrong with you and you might want to see a therapists. But since therapy costs money, you can also try caffeine. Or as the homeless in Ukraine do, sniff glue.
According to all known laws of aviation, there is no way that a bee should be able to f̶l̶y̶ travel the speed of light Its wings are too small to get its fat little body off the ground. The bee, of course, f̶l̶ies- travels the speed of light anyways. Because bees don't care what humans think is impossible.