Because deep breathing exercises don’t always work, some people turn to the visually captivating Poison Tree tattoo to manage their anger.
“A Poison Tree” is a short, deceptively simple poem by English poet William Blake (1757–1827), published in his dark-toned Songs of Experience collection in 1794 (per Finding Blake).
The poem explores powerful emotions like suppressed anger and the dangers of unexpressed wrath (via BBC).