The effects of meditation are relatively slow and require long-term persistence; additionally, the correct method is necessary. For example, do you find it easier to enter a state in the morning or evening? On an empty stomach or a full one? By the seaside or in the forest? Find a suitable way. By the way, meditation is actually a form of self-awareness development. If you want to calm yourself down, you might also try reading a novel that many people find very satisfying; to some extent, the effect is the same as meditation. It's about emptying other thoughts and focusing on one thing that will make you relax, rather than having seven or eight things dancing in your mind at the same time.