I have experienced this a lot. One example that comes to mind has to do with work. I work at Red Lobster and I get paid $8.50 per hour. I am a hostess and there are very few of us. Now, with soccer season, I get to work less. Yesterday, I was not scheduled to work but someone asked me if I would work for them. I had to think about a few things before I made a definite decision... Would I finish my homework after work? Would I get home early enough to get a good night sleep? But also, the pay is very good for my age children so on the positive side I would be making some money that I wouldn't have if I didn't work... I think this would be considered marginal thinking because I took into consideration all of the different effects of working. I decided to work and overall it was a good decision. I got home in time to finish all of my homework, watch the remaining part of the Super Bowl, and get a good night sleep!!
Throughout my life I have to make MANY decisions that have to do with thinking at the margin. (This involves adding or subtracting one unit to opportunity cost.) For example, one time I was asked to label every single seat in the auditorium for $50. Sounds like a pretty tiring job. I had a few variables before I could make a decision. Should I get a good nights sleep instead? Would I be able to finish all of my homework? Could I still make it to dance after? Overall, my final decision was to take the challenge and label every single seat in a long, and tedious job. But when the economy is tight and even young teenagers like me have a tough time finding a job, it was nice becoming $50 richer working in a place I enjoy to be in.
Write something about yourself. No need to be fancy, just an overview.