Dear Friend,
While age is on your side, you have the biggest gift, the gift of possibilities. Numerous possibilities of vocation, daily routine, love, and legacy. And " possibilities" are the only source of happiness. Any action/ achievement that doesn't bring in more possibilities will not make you happy. Class rank brings in possibilities ( of "bright!" future), "good" job brings in possibilities ( of a "fulfilling!" future), love brings in possibilities (of companionship, of joy, of children), and therefore, they are source of happiness, to that extent.
So choose your actions wisely, understanding fully well what kind of possibilities you want to create, and whether these possibilities will create base for more, or the chain is going to terminate at some point. Please also be aware that once you choose you forfeit all other choices in the category available at that time, because choice needs to be worked upon for a period of time to covert it into actualised possibility, and by the time you realise that you made a wrong choice the time for picking up another option has passed. If you don't find MBA worth while now you can't go back in time and start over? Not impossible, but only at the cost of precious time.
Biggest mistake people make is to keep repeating the act which brought them happiness when they did it the first time. Possibility, once attained doesn't remain a possibility any more, it becomes achievement, a trophy, and trophies are always the past. In past lies only a memory of happiness, and only thing it causes in present is the melancholy. Happiness is always a thing of future, never past. A thing of possibilities, not trophies. A good possibility, which once attained, will explode in to new possibilities for sustained happiness.
One big trick for sustained happiness is to run after a long term possibility. And " run" here means to structure your daily life in alignment with what is necessary for achieving that possibility. Of course breaking it down into a few landmark events will help in assessing the progress and realigning the course.
Most of us become accustomed, by way of daily practice, to certain kind of actions and find it easy repeating them. Such as doing our job, social behaviour, and to some extent our emotional life is governed by such actions. We need to remind ourselves that these actions were means to an end, not the end itself. People start tricking themselves in believing that possibilities borne of only these actions will make them happy. That's a big mistake. You should never let ease of performing a practiced action be the reason for chasing a possibility.
And, that's the biggest harm that a daily job does to you. It becomes easy to do and thus lures you to build possibilities only around it; such possibilities which you may not even want.
I wish you a very happy birthday and a future filled with sustained possibilities of your choice. One can use birthday to actually count one's possibilities; and, in case, if you choose to do that, I wish you an endless list.
With love and best wishes,
-Pulastya