Effort refers to the work put into something. If you do not put forth your best effort then you are more likely to fail in achieving your goals, but if you give something all of your efforts then you have accomplished much even if the end goal is not met. The effort required to move a 5 lb block is far less than the effort needed to move a 500 lb block.
Reminder I don't have it all together and neither do you. We are all God's work in progress.
God always gives His best to those who leave the choice with him.