By putting off what is required to be done, you are merely increasing your own anxiety associated with the task. Instead of dwelling on the anxiety and fear that the task seems to inspire, try viewing the task as the positive solution to those unwanted and distressing emotions.
How can I not runaway from my tasks and do that scary thing I have to do?…. Start with a Routine. Start Simple and build along the way.
A question I’ve learned to ask myself is why do I run or walk away from them. What is my fear and is this really true. Then I do a little task and move to the one I’ve avoided. Good luck.