This is exactly what we do when we suppress feelings and thoughts that we either don't have time for ("I don't want to cry in this meeting at work.") or that we are embarrassed by ("I shouldn't say what i'm really thinking out loud." or "That hurt, but big girls don't cry, so i'm not going to show my true feelings." "Stiff upper lip.")
We hide these suppressed thoughts and feelings in a dark cabinet, shut the door, and forget about them (or try to forget about them). [This is called repression.]
If we are successful at forgetting about them, these thoughts and feelings will "bloom" as projections onto other people. We truly cannot see that the person we are so upset with out there is actually ourself. We really believe that it's all about "them." It never is.
Equanimity helps us ride the waves, yes, even the tidal waves and tsunamis of our emotions. The pain comes, and it goes. Really. Really.
Finding our balance is daily life is an on-going practice of equanimity.
The 8 Worldly Winds
Pleasure and pain,
Gain and loss,
Praise and blame,
Fame and disrepute
Come and go like the wind.
Rest like a great tree
in the midst of them all.