There are 2 books which impressed me the most: The 7 Habits of Highly Effective People from Stephen R. Covey and Flow from Mihály Csikszentmihályi. Both of these books impacted significantly my way of thinking. I can only suggest them to everyone from all ages, gender or positions.
Let me clarify that there aren’t any miraculous magic tools which work for everyone and resolve all of your problems like a magic wand. If you don’t know your priorities, every time management tool will fail. I collected here my favourite methods with a brief explanation. However, before trying out any of these, please go through firstly the basic time management principles to see how to plan your agenda.