When your mind and heart are truly open abundance will flow to you effortlessly and easily.
Why am I always searching for something else in my life? When is enough enough? Is it healthy as long as the longing is for something positive that contributes to others and the universe?
Enough is never enough in the relative world of desire, but the experience of one’s higher self is the final aim of all desires and it is there that one finds ultimate fulfillment. But that doesn’t mean that desire is necessarily a bad thing. As you point out, when the impulse for more and more is selfless, it is a powerful agent of evolution and happiness. So, let the tendency of your desires lean toward all that you are thankful for and how you can be of service to others. That way you don’t have to worry about the endless nature of desire.