"I don't feel like it today."
\nThat statement there is a two-edge sword.
\nOn the one hand it's important to listen to your body and take care of your mental health. On the the other hand, if you find yourself not "feeling like it" while you've also got goals you want to achieve...
\nYou're only holding your self back.
\nThere comes a point where "I don't feel like it" becomes an excuse for laziness.