Monday morning can be tough. You wake up and know you have the whole week ahead. To make Monday feel a little better, pick a day of the week where your morning, afternoon, or evening (depending on your work schedule) is all your own. In that time slot pick something to do that will excite you and keep you motivated all week.
You can pick anything that gives you joy. Maybe you select one night for family dinner night, or movie night, or you have an adventure planned where you try something new in your state. Maybe you have friends over for game night.
Just remember that in addition to work we need to have some fun in life. So combat the Monday morning blues with knowing that you have fun planned in your week ahead.