yeah I swing between "we're doomed" and "we are going to get a 15 year licence and win the league each of those years" on an hourly basis. Its not good for my long term mental health...
I know how you feel.
I found myself looking up the description of how I felt over the last few weeks and came up with this:
"bipolar disorder - noun: a mental condition marked by alternating periods of elation and depression."
(no offence meant to anyone suffering from a real one)