???hi i need some advice on ....... please help answer my question???

i have been feeling down lately and i don't know what to do. i feel like im having a midlife crises!!!! i look back and i have not changed for any good nor have i achieved anything but time, i can not see any thing better for my future which makes it seem a even sadder place. i look into the face of old women and see a kind of weariness that comes from mere existence, all life drained from them years ago by life itself. i see my own future. i feel powerless to change by my own nature. in all honesty looking at myself i see some one lacking in any sort of get up and go, i have always just floated along taking the path of least resistance. Now my question to you all is how can i change? what should i do? what makes life meaningful for you? if you are over 60, if you had it all to do over again what would you change, how could you have improved what you would keep the same? any advice is appreciated thank you.