This is a practical case of "problem never ends". You think the need before you is pressing enough only for you to wake up the next day with a much more higher need that surpasses the previous, to some extent, it looks like the need you attended to the previous day met the incoming need on the way and informed it that you are more than fit to combat whatever is presented at you. What I do is to try the best economical approach towards solving the problem and not spending too much as more is coming tomorrow. Everyday births a new challenge.