How hard do you need to try? How much effort must you put in? Are you engaged in some crucial struggle that requires your every last ounce of stamina and concentration? Or can you afford to relax and let things unfold as they will? That rather depends on how you choose to see your current situation. If it pleases you to seize control of a process and invest much energy into its outcome, by all means feel free to make that effort and to expect success. But you may not need to do as much as you fear.