"It is He who sent down tranquillity into the hearts of the believers that they would increase in faith along with their [present] faith. And to Allah belong the soldiers of the heavens and the earth, and ever is Allah Knowing and Wise." (Al Fath, Chapter 48, Verse 4)
Then, find Allah. Allah know what is the best for His servant. Allah is Al-Khaleeq (The Creator). Feeling down is a test from Allah. Every single things Allah give to us is a test. Do we know what is main purpose of the test? Because Allah is Ar-Rahman and Ar-Rahim.
Every single day, minute and second we asked Allah "O Allah, please give me the strength to face all challenge in this world". We're waiting for the strength. But, it is not coming. The test comes over and over again. The final destination after the test, we felt down.
Do you know something?
Allah gives you a test because He want you to be a strong servant.