As far as how you set your expectations, I'd like to propose an experiment: Draw a Punnett square, where X is each possible choice you can make with your time relevant to one variable (work/don't work) and Y is each possible result of the subject of your choice for X (meet deadline/don't meet deadline). You can imagine easily what a p.sq. of these four possible combined outcomes looks like. The point isn't that some of the intersections are impossible (ex. don't work/meet deadline). The point is to notice your ideal outcome (don't work/meet deadline) is: a) impossible, or if not impossible, then b) unlikely, given each intersection has the same general probability of occurrence. In a nutshell, stop expecting the impossible and the improbable. By investing yourself fully in just one of the possible outcomes represented in a p.sq., you will both fail to accept a reasonably good but unfavorable outcome and fail to persist when your ideal outcome appears unachievable.