A lot of people have anxiety, which is a mental health problem. And unfortunately, it can be hard to explain to other people. Because of this, many people with anxiety get tattoos to help them feel better about themselves and what they've been through.
Examples of these include:
The chemical hormone serotonin.
Something under the project semicolon movement.
A messy cloud with a deeper meaning.
A phrase reminding you that you've made progress.