What works for procrastination?
I found this 2018 meta-analysis of 24 studies by Wendelienvan &amp; Klingsieck on procrastination intervention - Educational Research Review article.

They used Steel's 2007 definition of procrastination as an irrational and acratic behavior. Procrastination is a voluntary delay an intended course of action despite expecting to be worse off for the delay. Wendelienvan &amp; Klingsieck found that cognitive-behavioural therapeutic approaches had a greater reduction in procrastination than self-regulation and strength &amp; assertiveness training interventions. 

Quite an accessible and interesting read.