First of all, these are valid feelings so don't just discard them. They are normal. They reflect your values. You want your life to have meaning, you want to have an impact on the world, you want to be happy. These are good things. They get you out of bed each day and motivate you.

Now, just learn to tone your emotional response to these thoughts from 100% to like 20%. Remember that your desire to grind is rooted in positive values, but don't let them run amok and take over your life. Acknowledge them, but realize they are not the be-all end-all.