There is medication for procrastination which can help the person focus better.
The medication that is most commonly used for procrastination and to help the person focus is Ritalin.
However be aware that Ritalin can sometimes make a child or person focus less and sometimes Ritalin can make a child or even adult or teen turn violent.
A friend of mines kid was prescribed Ritalin and he got really out of control when on the Ritalin and after his doctor took him off of Ritalin he become less violent and was a nicer kid.
Not everyone or every kid who takes Ritalin will get out of control but some do.
There's also medication such as Modafinil (e.g., Provigil) and Adderall which work better for Procrastination in some kids and teens and adults.
If your child or yourself is taking Ritalin and becomes out of control when on it or violent let the doctor know so they can take them off of it and get different medicine.