Make life richer, to me, means don't wallow or lay idle. I try using the days available to me to learn new things, see new places, meet my friends and enjoy my hobbies. By 'making life richer', I sleep more soundly.
By partaking in difficult tasks or doing things I don't always want to do such as a tough workout, a mountain climb or completing a task that had been hanging. I think stretching yourself can be done on a daily basis by getting out of your comfort zone, be it at home, in the office or on the playing field.
My coffee of choice would be 'blue bottle' from Hayes Valley, San Francisco, sent home by my sister, or a cold brew from Starbucks if the sun is shining!