Burdened? Pause and Rest.

"When eyelids are heavy, it is time to go to sleep and take some rest. Otherwise the quality of anything that you do suffers."
When you feel that there is just so much to do, but you have too little of what you need to move on - such as physical stamina or strength, information to make a learned decision, people who are consistent to assist you, or resources like funds and other logistics - then you are carrying a load so heavy that has become a burden to you.
What does this situation trying to convey to you?
It simply means - whatever it is that you are doing or preoccupied with, that something would eventually take away the happiness that you may be currently enjoying or your efforts in pursuing happiness may be an exercise in futility.
When that happens, you will realize that it is not really a matter of treating it as a challenge. It is instead, a burden that you have to address. You need to "un-burden" yourself with what is turning out to be an obstacle to where you want to go.
For instance, there are people in your midst that do not even deserve any attention. Either they make your work more difficult, or your life miserable. But of course, you cannot ignore them. You may have to take action by making it clear to all your objectives, and your standards. Meaning, they must be made aware of what you intend to achieve and how they can help you. Otherwise, there is no reason for them to be around since they will be a burden to you.
From a different perspective, if you were working for somebody, and you feel that you are merely being used for vested interest, and you are not happy with your work since there is sense of fulfillment, then it is a sign that either your role should be redefined where would be in accord with your conscience, or you may have to resign. There is no point in becoming a martyr when the people you work with do not or the person you work for does not stand for any cause, or may not be, quoting Ninoy,  "worth dying for".
Confronted with a burden, you must temporarily, briefly and comfortably disconnect from the outside world. You will need to detach yourself from a busy, hectic, noisy, materialistic, uncaring, selfish, and chaotic world.
It's like going to bed and experience a restful sleep. You go through a ritual of washing your face, combing your hair brushing your teeth, putting on your pajama or sleeping wardrobe, switching off the light, and tucking yourself in a comfortable bed, embracing a pillow and covering yourself with a nice blanket in a cool room, free from any unnecessary noise, or pests like mosquitos, cockroaches and rodents. All after saying your night prayers and hoping for a pleasant dream. There can be nightmares too. But only if you bring your worries, hatred that you harbor and doubts to your sleep.
So how do you do this sleeping ritual in real life while awake and where you must un-burden yourself?
Follow some simple steps. You will be surprised that there is really nothing new or spectacular with this process. You just do not pay attention perhaps to basic things in life. Here they are:
Sanctuary. Find a place where you can be by yourself. A place blessed by silence. Without any interruption. No mobile phones. No computers. No gadgets. Just a notebook and your pen.
Faith. Place yourself in the holy presence of the Almighty God. Bear in mind that when you do so, whatever it is that you think, do or say - are offered in prayers and for His greater honor and glory. Not yours or anyone else.
Concerns. Make a list of your concerns. Do not consider any of them as problems. They are not. Remember that there are problems that cannot be resolved. Concerns are addressable at all times. Be precise and be certain what these concerns are. You do this by (a) assigning a name to it; (b) defining what it is; (c) ascertaining what needs to be done; (d) specifying how each steps shall be done; (e) identifying the people who will help you; (f) making an inventory of your material resources and funds needed; (g) being ready with what may go wrong and how you will handle it; and (h) drawing up a timetable and as much as practicable, a flowchart
Action. Do not due put off for tomorrow what you can do today. It may mean trouble if you incur a delay. You must note that at this stage, your compliance with what you have set out to do is very important. This could spell success or failure.
Congratulations for your patience, and interest in reading this material. It would show that you are serious in what you want for your life at this time. This means you want to move on and succeed more. So, go get your well deserved retreat.