Honestly this is a big question that so many rush into it but the truth is that if one has not been in the shoe it is easier to judge than facing the issue in a real life senerio.
"As in what can be done on daily basis to get past the disappointment, sadness, depression and still have heart to stand strong?"
The basic solution for this to be say happy and over look whatsoever circumstances one might be facing. Of a truth it is not truly easy especially when one is seriously hurt but let just stay calm each time and believe there is problem without solution.