Since there are different memory systems, we will focus on one of them: working memory. Working memory training consists of improving your ability to hold information for a period of time and use it for some tasks.
Pencil and paper.
Take a blank piece of paper and make a list of the tasks you have to do for the day. Try to write down as many as possible. Write short sentences that make sense to you. Turn the piece of paper over and try to remember as many tasks as possible, in the shortest time possible.
Cognitive skills must be put into practice constantly so that they maintain an optimal level. By exercising your working memory, you will strengthen your ability to keep information in mind and use it when necessary.
In the morning, before you start all your usual activities
There may be some frustration when you start this exercise. However, with practice, it is likely that your performance will improve.
Although there is some controversy on this issue, there are a number of studies that support working memory training, with this and other memory exercises.