It seems to me we ought to re-define procrastination. While dictionaries generally define it as delaying or putting off doing something, in day-to-day conversation procrastination has a bad reputation. 

Most people think procrastination is a bad thing...so they admonish themselves and others who do it [actually, at a more granular level, I mean 'don't do it']. 

Anyhow, because it has evolved with such a negative image I think it is time to re-define procrastination as follows:

If you put things off and feel good about it - I mean, if you feel only good and never bad about it - that's procrastination.

If you put things off and feel bad about it - I mean, if you feel anxiety or worry or some other negative feeling - that's concrastination.

Then, putting things off and feeling neither good nor bad becomes crastination...[which, I acknowledge, requires some care in pronunciation...and perhaps spell-checking too?]. 

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Regardless...

There's no question - procrastination has its pros and cons.

In fact, I continue to see value in procrastinating for success.

Spirited definitions...

Attention is when interest is captured.

Concentration is when Attention is narrowed.

Focus is when Concentration is intensified.

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Merriam-Webster dictionary:

Attention

• the act or power of carefully thinking about, listening to, or watching someone or something
• notice, interest, or awareness
• special care or treatment

Concentration

• the ability to give your attention or thought to a single object or activity
• the ability to concentrate
• the act of giving your attention to a single object or activity
• a large amount of something in one place

Focus

• a subject that is being discussed or studied 
• the subject on which people's attention is focused
• a main purpose or interest
• a point at which rays of light, heat, or sound meet or from which they move apart or appear to move apart
• the point at which an image is formed by a mirror, a lens, etc.

For achievement, three qualities of mind rise above the others: intelligence, drive, and self-control.

There are two types of intelligence: cognitive and emotional.

Drive is all about energy...required to sustain thought, action, and 'the body'.

Self-control draws on the decisions of intelligence and the energy stoked by drive...self-control is about self-direction of thought and the actions that follow thought.

Willpower is a synonym for self-control*.

Willpower is elite mind-work…challenging mind-work.

Willpower converts mind-energy into Achievement.

Achievement is subjective. Achievement provides the measuring stick for Success. Each person uses his or her intelligence to define the Achievement required to obtain the Success he or she desires. This applies to individual/single tasks. This also applies to long-term goals. Willpower may or may not be called upon to perform individual/single tasks: for enjoyable tasks [such as hobbies] little or no willpower is required; for challenging tasks willpower will be used to expand and maintain concentration; for boring tasks willpower will be used to improve focus and concentration.

Willpower will definitely be called upon to achieve long-term goals. In summary:

• We use our intelligence to create our long-term goals
• We draw on the our drive energy to fuel the thought and action required to meet our long-term goals
• We call upon willpower/self-control to direct our thoughts and actions toward our long-term goals

When we call upon our willpower it consumes energy, converting mind-energy into Achievement and, over time, into Success.

To achieve long-term goals we must attend to our energy levels: taking steps to build it, taking steps to avoid things that waste it, and taking steps to ensure a good portion of it goes to fuel willpower.

*  Some describe willpower in terms of 'soul' and 'spirit'. Not wanting to dwell too much in the metaphysical...there is no question willpower is a special thing, closely tied to the human condition.