IMO we as humans were never supposed to get immense motivation BEFORE an action. Its supposed to come after you see the results of your work.
That said, you keep coming up with excuses you cant create:
Too tired
Ideas aren't good enough
Not in the right mindset
What I make won't look good anyways
You need to alter your perspective because that is what is holding you back. You could draw despite all of those reasons above, but you CHOOSE not to.
I don't want to make it like a pull yourself up by your boot straps thing, I only say its a choice you are making so hopefully you will realize that you could just choose to draw.
Even if what you create is devoid of creativity, is unoriginal, does not represent you, and just plain looks bad, its still better to have created something and throw it away than to have created nothing.
Also any strong emotion can result in beautiful art, whether its a positive emotion or negative. Most people just want to see emotional honesty in art. Nothing wrong with how you feel, other than you preferring feeling a different way at the time.