What I would suggest if you were to try meditation again is the following.

-Five minutes is fine, even less is fine.
-No one can fully concentrate on meditation. Everyone's mind wanders. The main thing about it is to recognize that you have wandered and come back without judging yourself. No matter how many times your mind wanders. -That is the training: recognize that you wandered, come back nonjudgmentally.

Meditation can be helpful because it gives practice in recognizing the wandering and doing the coming back. It helps create a good habit. That can help, for example, when you are starting to lose focus on self-control.

*****

You can meditate for one breath. When you feel stressed, for example, you can use the "STOP" technique.

S: Stop what you are doing.
T: take a slow, deliberate breath.
O: Observe something, such as "I am really stressed right now." "My mother is flipping out right now." "My feet are flat on the floor right now."
P: Proceed with what seems best to do.

(Can be repeated as needed )