It can be hard to get started. Ive done that many times, (and quite often when it comes to filing/paperwork at home - I'm the queen of procrastination with that task!) one trick you can try is to say to yourself I'll go and do this for just 5 mins - perhaps it's to do just part of the job - once you get started it is often easier to continue and you may feel a sense of satisfaction that you've done it and may then feel inclined to continue with other tasks - or you will have at least have taken an item (or part of a task) off the to do list
Writing a list and crossing stuff off helps too - clearing the list provides a sense of getting stuff done which can bring an element of satisfaction. And like Karena said, so often when we put things off they get so much harder to tackle or snowball into bigger things to fix which will take even more motivational energy
Our motivational energy isnt endless, so perhaps start small - do a few things and gradually build up. Focus on everything being little successes - focus on what has been achieved, it all adds up to being done for a reason.