Giddyup

"When the horse you rode in on becomes sick and dies, it is prudent to dismount."

PRUDENT
1. wise or judicious in practical affairs; sagacious; discreet or circumspect; sober.
2. careful in providing for the future; provident: a prudent decision.

SAGACIOUS
1. having or showing acute mental discernment and keen practical sense; shrewd: a sagacious lawyer.

I don't have much else to say other than that. This phrase has been stuck in my head all day like a bad song. I guess the moral of the story is that I have grown sick and tired of being sick and tired. It is time dismount the dead horse and get on with my life.