Some days are just plainly and simply harder than others, and you have to accept this reality and adjust to it. Assuming all days are the same is naïve and foolish and ignores the barest of facts, which is this: Change is the ONLY real constant in life, starting with our birth and ending with our death. Life itself is purely and inarguably a bridge from one benchmark to the other, and every step of the way is somehow different and in some fashion more nuanced than the one preceding it. Every stride we take is a little different from those previous–be it length, steadiness, angle of implantation, pressure downward, etc.–and consequently every impression we leave in the sand is a wee bit different as well. Individuals who cannot readily adapt to change struggle with life; individuals who do never have to worry about a thing.
Fred's Soapbox 