How to become resentful;
– denial of emotions.
Suffocate and restrict responses, feelings, emotions or anything that you consider “weaknesses” until they poison your entire being and spew from every crevice.
Instead of light, shining from within you, darkness will engulf you. By then you won’t want to isolate, desperation will surface, your spirit will struggle, reaching out, but no one will want to be around you.
You’ve pushed them away.
Congratulations. Class dismissed.