Yes, yes it can be... but if there was no struggle, there could be no reward. When those rewards seem far and in between, I try to focus on the simple joys in life, and find a comfort in my own existence. When the challenges that we need to overcome seem staggering, sometimes we have to take a step back and enjoy something small, to remind us of the beauty in existence. Even if that just means dissecting the flavors in your next meal, feeling the rain on your skin, looking at the stars, or feeling the sun on your skin. Also, vitamin D helps, a lot. Try eating some oranges... ;P I hope this helps.