We must not use difficult days as a time to stop serving God. We must not use difficult days as a time to say God is not calling us to continue on in what he calls us to do for him.
We read throughout the bible of lives of people who obediently followed the call and direction from God for their lives, including during difficult times.
Just like Isaiah, we must be willing to say, no matter what is going on in our life or around us, 'Here I am Lord, send me." Read Isaiah 6.