Have you noticed that sometimes people around you fulfill your requests as if it were their own idea?
The secret is in the ability to direct thoughts imperceptibly.
For example, the "door in the forehead" technique: first ask for something big and most likely get a refusal. And then immediately move on to a real, small request.

After being rejected, a person feels awkward and is more likely to agree to less in order to “make amends.”
Another method is the "chameleon effect." When you want someone to do something, tell a story about someone who has already done it.
For example: “My friend started playing sports and now he has a lot of energy.”
The listener will unconsciously want to repeat this path, because the brain copies behavior more easily than invents new ones.
The “rule of three yeses” also works interestingly.
Ask three questions that you are sure your interlocutor will answer positively to, and then voice your main request.
The chain of consent programs him to continue: “Do you like to save time?”, “Do you want to improve your skills?”, “Do you like to get results quickly?” - after that, your offer seems like a logical continuation.
But the main thing is sincerity. If you try to manipulate without taking into account the interests of the other, sooner or later it will become obvious.
Psychological techniques are not a magic wand, but tools for creating mutually beneficial situations.