these things and others endure or have become more refined and honed

Our endurance levels certainly increases as we age and I find myself to be more patient than my young hood. One other thing I notice now is that in young time, our body was capable of taking stress, but as we grow, its very important to stay calm and deal with things happily, patiently - just do as much as you can and don't bother about things that is outside of our control.