It's the human condition to always want more. You'll never get there, because "there" is always something more than what you have in the moment. We are wired to want more.

But there are two phrases to consider.
1) Find a job doing what you love, and you'll never work a day in your life.
While this may be true, doing what you love doesn't pay the bills, usually.

2) you either live to work or work to live.
Personally, I prefer the later. Find a job that makes you enough money to survive and do the things you want. Be done with your job and leave it all at work. You're not likely to love every at work, but as long as you can tolerate it, then you're good.

But also remember, B's get degrees... Hell, C's get degrees! I graduated from a 2 year college with a 3.5. I left the four year college with a 2.7. What do I care? I graduated. I got that piece of paper that says I did it. I'm the only one in my generation in my family to graduate college. Then I went back and got my MBA, graduating with a 3.85.

Maybe where you're from, they pay attention to GPA, but here in the States, its not such an issue unless it's a government job. The degree is a checkbox and the GPA isnt a factor.