"Your role may be thankless, But if you're willing to give it your all, you just might bring success to those who outlast you."
To get what we really seek in life, we must have points of sacrifice. By "sacrifice" I mean, giving up one thing, in order to obtain another. For example, if you strive to get a promotion at work, you may sacrifice precious hours you might have spent with a loved one. This is in fact an opportunity cost in itself because in order for you to attain an opportunity, there is a cost associated with it. Costs usually account for time, money, effort and endurance and benefits can range from a promotion to a successful relationship. To make things truly work out, one must lose out on one opportunity.
You might be saying to yourself right now "I've never had to sacrifice." I will counter this thought by explaining to you that the event of even attending a college is a sacrifice and you must endure four years of hard work to either progress into graduate school or get a superior job. Instead of going to college, you may have stayed stationary at home or took up a moderate job that barely pays the bills. Have you ever driven lengths to see the woman you love? A relationship in its essence reflects sacrifice and builds off this element to be successful. If two people are willing to sacrifice to be with each other, then it must be true love. If you are willing to put in the effort to graduate at the top of your class (as a sacrifice) then you will attain a superior job.
As a rule of thumb, the more you sacrifice early in life, the more benefit you will receive later. This is a judgment call that you must make. I interned eight times throughout the past 5 years, as a sacrifice and because of that sacrifice, I claimed a job that fit both my expectations and requirements. The sacrifice here was time and effort and it paid off. If you have the determination and are willing to work for something and sacrifice, you will get what you want.