Lao Tzu said that life is a series of natural and spontaneous changes. These changes can occur at any time without warning. So much of life is happenstance. We should not try to resist these changes for that only creates sorrow. We should let reality be reality and let things flow naturally forward in whatever way they like. Thrashing about against what cannot be controlled only creates exhaustion. Be like the leaf floating upon the river gently. There will still be ample opportunity to go where you wish.