swim against the tide
and swim against the current 1. Lit. to swim in a direction opposite to the flow of the water. She became exhausted, swimming against the tide. If you really want strenuous exercise, go out in the stream and swim against the current.
2. Fig. to do something that is in opposition to the general movement of things. Why can't you cooperate? Do you always have to swim against the tide? You always seem to waste your energy swimming against the current.