In reference of Neel Burton
Laziness should not be confounded with procrastination or idleness.
To procrastinate is to postpone a task in favour of other tasks, which, though perceived as easier or more pleasurable, are typically less important or urgent.
To postpone a task for constructive or strategic purposes does not amount to procrastination. For it to amount to procrastination, the postponement has to represent poor and ineffective planning, and result in a higher overall cost to the procrastinator, for example, in the form of stress, guilt, or loss of productivity. It is one thing to delay a tax return until all the figures are in, but quite another to delay it so that it upsets plans and people and triggers a fine.
Laziness and procrastination are similar in that they both involve a lack of motivation. But, unlike a lazy person, a procrastinator aspires and intends to complete the task and, moreover, does eventually complete it, albeit at a higher cost to himself.
Idleness
To be idle is: not to be doing anything. This could be because you are lazy, but it could also be because you do not have anything to do or are temporarily unable to do it. Or perhaps you have already done it and are resting or recuperating.The Psychology of Laziness
Lack of Self-Discipline 