Well! There are so many ways to meditate and relax yourself in important circumstances.
I started with yoga. I was 21 at the time. It worked perfectly for me at the time as I had a lot of physical energy to express and doing those asanas was a challenge for me.
I was always known to the fact that after playing football or hitting the gym, I acted mindfully, relaxed and used my brain better. The anxiety seemed to disappear and it felt amazing. But it was difficult to do that if you dont have the environment to play or the energy to hit the gym.
After I felt adept at the physical part of yoga, I felt the voicing 'Om' gave me a different kind of relaxation and awakening. I thought I had opened my third eye haha!
But yoga couldn't work when I was actually in a situation where I wanted (exams, relationship troubles, fearful situations), that is where my mind was open to mindfulness. Mindfulness does not need a 'session' or a yoga mat - it is applicable everywhere! I learnt it through videos on youtube and Aura Health app.