"Don't quit in hard times; pray all the harder." -- Romans 12:12
If you're in a tough stretch right now, I urge you to pray. Let your weakness bring you closer to God. Rather than let fear overcome you, embrace the challenge and let it strengthen your faith and resolve. Remember that after every storm, the clouds eventually move on. Remember that after every night, the sun will rise again and shine light on you. Have faith!
If, on the other hand, you're in a good stretch right now, I urge you to pray as well, but for different reasons. First, to thank God for all blessings. But second, to ask God to protect and accompany all those who are going through a tough stretch. That way, when it's your turn to confront tragedy or uncertainty or hard times, you can recall that, just as you prayed for others, others will be praying for you. Be thankful!