Skip the Productivity Tools band wagon
After reading lots of content about productivity and motivation over the years, I have only found two books, or sources that have helped me accelerate.
Paradoxically enough, they are both about understanding the mind, emotions and how we learn.
The Chimp Paradox by Dr. Steven Peters
How we Learn by Benedict Carey
These two used in combination, will be game changers.
Backed up by science, they are Easy to use and work well.
Find tools that work for you, for sure.
But remember the most productive thing you can do is, to understand your mind and body and use them most efficiently to do what you need to do, and then supplement them with other tools.