Life may be more akin to a series of meets than a single marathon. You can lose a race here or there, as long as you win in one contest, in one area. All the struggles you endured will become a prized investment in your own person.
Live in a way that is full of life for yourself, for your loved ones, for your friends. People who do so will find the courage to transform sufferings into hopes. Not only that, but they will be able to light the lamp of hope in the hearts of many others, as well.
Human society can be full of contradictions. It can be unfair; unforgiving, too. Yet we cannot afford to dismiss it and turn our backs to the world. Given a choice whether to sink or swim, we must swim to the very end, no matter how the seas around us may rage.
Whether in life or in a specific undertaking, there will undoubtedly be times when you achieve genuine progress, only to come up against a wall or feel yourself regressing. There will be times when you just need to stop and rest. Such are the vicissitudes inherent to any struggle. When you challenge to achieve something, be ready to face the unexpected.