"The reason people find it so hard to be happy is that they always see the past better than it was, the present worse than it is, and the future less resolved than it will be" ~ Marcel Pagnol (French Writer, Producer and Film Director, 1895-1974)

retrofit
Pronunciation: 're-trO-"fit, "re-trO-'fit
Function: transitive verb
1 : to furnish (as a computer, airplane, or building) with new or modified parts or equipment not available or considered necessary at the time of manufacture
2 : to install (new or modified parts or equipment) in something previously manufactured or constructed