It’s okay to have a bad day where you may feel down and low.  However, you can’t stay there.  Allow yourself to feel genuinely, but do not wallow in this dark space of pity, worry & doubt.  God catches every tear and He understands every hurt.  God will supply all your needs.  Today is a new day.  Get back up and try again. 

Psalm 56:8, “You number my wanderings; Put my tears into Your bottle; Are they not in Your book?

Revelation 21:4, “And God will wipe away every tear from their eyes; there shall be no more death, nor sorrow, nor crying. There shall be no more pain, for the former things have passed away.”

1 Peter 5:7, “Casting all your care upon Him, for He cares for you.”

“Heaven knows we need never be ashamed of our tears, for they are rain upon the blinding dust of earth, overlying our hard hearts. I was better after I had cried, than before–more sorry, more aware of my own ingratitude, more gentle.” 
– Charles Dickens