No matter how many problems, challenges, and deadlines you have, there is bound to be something albeit very small working well in your life. Articulate what is working well for you and put your attention to it.
You will realize soon enough that your energy level will improve simply by this one small switch. If you continue that focus you will find that your problems, challenges, and deadlines will be less daunting. You will tackle your problems, challenges, and deadlines more calmly and effectively.
Why is this the case? Simply because you began by what is working in your life. Energy follows attention!