Find a project for your Hereafter, dedicate the best portion of your life for it today and watch how not only it will fortify you from doubtful matters today. It will also guide you and I to the highest grades of Paradise in the Hereafter. Make duaa that Allah safeguards your Iman.
Identify your skills and work for a project that will bring about the maximum return in terms of reward on the Day of Judgment, a project that will continue to feed good deeds into your grave when you are 6 feet under and you have died.
A project that will help extend your short life, that will outlive your short life, create a vision.