First thing to do is: go to bed earlier.
Motivation is a form of mental energy, and if you have no energy because you are not getting enough sleep, then you won’t feel motivated.
Second thing is before you go to bed, write a list of three things you want to achieve the next day. Memorise the list and go to sleep with that list in mind.
When you wake up your brain and your body will be primed, and you will jump out of bed and hit the ground running.