Get mad, then get over it.
When my dog Buster died, I couldn't get over it. I was in bits.
I once bought an ill-advised half cashmere, half camel hair jumper for £800, then ruined it by spilling a pint of Guinness all over it.
To be depressed or neurotic is passive. It happened to us; we are its victim, and we have no control over it.
I have an existential map. It has 'You are here' written all over it.
A stepping-stone can be a stumbling block if we can't see it until after we have tripped over it.