Hi there and welcome.
I'm so sorry to hear you're feeling this way, we're all going through horrible pain so YOU ARE NOT ALONE here.
Don't be surprised if you won't get cheered up easily, the only way I can think of, is to rejoyce in the good times we had we Michael, remember all the beautiful moments he gave us, cherish them and don't let go of the fact that Michael never gave up, he was always strong and kept smiling even through the hardest moments in his life.
I personally find strenght in HIS strenght so I hope it helps.