We should live fiercely while we have the ability. As I watch my 95 year old Grandma living these days she is unable to do many of the things she use to enjoy and that we take for granted. The simple things, like heading outside for a walk requires help, reading requires setting up the light and being at a certain table with a magazine on a stand and that's only if she isn't too tired, watching television is too noisy and "they" all talk too fast or it simply doesn't interest her anymore. Live fiercely while you have the chance because none of us know for certain when we are going to leave this world.
Enjoy each and every moment, even the super hard ones for they help you grow into the person you need to be.