Learn to say no in situations where saying no can be difficult, where it could mean getting fired. Say no anyway, because it could lead you to greater opportunities.
“Tell me what you feel in your room when the full moon is shining in upon you and your lamp is dying out, and I will tell you how old you are, and I shall know if you are happy.”
“Life, we learn too late, is in the living, the tissue of every day and hour.”