I have just given up an afternoon class. I taught it for a teacher in my group. After 6 Fridays I felt I was not fit enough to work whole day at university. I convinced her to come back teaching. And I was successful.
I have promised with myself that I would not work full day. But sometimes I do not keep my promise :-). I want to help my colleague and I want to increase my income a bit although that small contribution to my income is not enough for me to buy new clothes.