Tree pose (Vrikasana) requires some balance. But the good thing about balancing is it forces you to be present. When you're present in the moment, you aren't thinking about all the things that cause you stress.
Sometimes all we need is a little break, to make all the difference in determining our happiness during these stressful times. The best part about Tree Pose is you can pretty much do it anywhere — grocery store, mall, airport, etc.).
From Mountain Pose, shift your weight onto one foot, then lift the sole of the other foot to your inner thigh, or rest it just below the knee. Bring your hands to prayer at your heart's center, or reach arms straight up.
Maintain your balance by keeping an active standing leg, and stacking the structure of your body from heel to knee to hip, rather than relying solely on the strength of your foot muscles.