Abstraction is very useful. This is the ability not to be distracted by external stimuli when you need to concentrate. Some people know how to disengage quite easily, others are given a huge effort of will.
Instruction manual
one
Try to protect yourself as much as possible from external stimuli. Much depends on your type of perception. If you are an audio type, get ear plugs in your ears. If you tend to focus on your feelings, avoid being in the same room with unpleasant people when you need to focus.
2
Sometimes it’s difficult to ignore because you have a poor perception of reasoning without examples, or a lot of unpleasant news is falling on you. Then the consciousness is so tired that it clings to any external stimulus, just not to concentrate on information difficult to perceive. In this case, imagine that this is not happening to you. There is some information that needs to be learned, answered and forgotten. Just like a combination of words. Only such an approach will allow you to somehow abstract from reality and focus on the data that is difficult for you.
3
To learn to disengage yourself, say to yourself what you want to concentrate on. Draw the most generalized schemes. Try to relate what you need to focus on with the data you already know. You also need to understand for what you are doing the required work. A clear understanding of goals allows you to cope with complex tasks. Imagine that you have to explain the topic to the child, it will make you simplify and get to the most important thing, distract from the non-essential and see the essence.
4
Helps to abstract the correct positive attitude. Look for the positive in everything that you usually perceive negatively. Take any current situation as the only one possible. To get rid of unnecessary emotions and focus on any problem will help sports. Sign up for the boxing section, or hit the pillow every time when negative thoughts make it difficult to concentrate on the main problems.