Life is very simple when we let things go without ego. Holding things in life make us heavier and ego stop us from connecting to the life. Leaving things in life is important to reach to a point of simplicity. That simplicity gives the success in life. Separation of the surrounding from us is ego, let the ego to connect to the surrounding, let the ego to love the surrounding. That love is the only thing which can help us to connect to the life.
Detachment and connecting to the universe is simply known as spiritual life.
Each bite of knowledge taking us one step ahead in the path of life. It's not going to stop us from the end; but it can reduce the pain in life what it going through. Every philosophy and science created on the base of it only. And I am pretty sure that it will remain like that till the life goes in this universe.