No Pain, No Gain
Why would God want to give us strength if we had no need to be strong? Life can be like a spiritual gym - you work hard, you might fail and different challenges can come your way, but it's learning how to approach those moments with God that make a huge difference. You can get back up, you grow and get stronger. We weren't designed to live a comfortable life where we never pursue or change. Success is not the absence of failure - success is getting up and using failure as stepping stones to the goal.