This is easier said than done. ...and I am reminded of the following account in Matthew when Jesus said to Peter, "why didst thou doubt?"
24 But the boat in the midst of the sea was tossed with the waves: for the wind was contrary. 25 And in the fourth watch of the night, he came to them walking upon the sea. 26 And they seeing him walk upon the sea, were troubled, saying: It is an apparition. And they cried out for fear. 27 And immediately Jesus spoke to them, saying: Be of good heart: it is I, fear ye not. 28 And Peter making answer, said: Lord, if it be thou, bid me come to thee upon the waters. 29 And he said: Come. And Peter going down out of the boat, walked upon the water to come to Jesus. 30 But seeing the wind strong, he was afraid: and when he began to sink, he cried out, saying: Lord, save me. 31 And immediately Jesus stretching forth his hand took hold of him, and said to him: O thou of little faith, why didst thou doubt? (Matthew 14: 24-31) from Douay-Rheims Version
I doubt men, but not God. Some days are more difficult than others, but at the end of the day, faith remains. The beauty of faith is reflected in our every day lives; look for it and hold on to it.