There is a great saying that I heard many times as I went through my career.
“God, grant me the serenity to accept the things I cannot change, the courage to change the things I can, and wisdom to know the difference”. (Author: Reinhold Niebuhr)
Looking back, my experience would also advise that one should not let this get in the way of taking some chances, taking some risk, with the caveat being when multiple avenues of approach have been used, and the homework done, and the case made, and with all that the oppression continues to grow, apply the wisdom card.
Success & Excess 