I'm not sure what heuristic to apply to decide if you should get tested. If I traveled back in time 4 years to convince myself I had these issues I probably would've asked, "is your physical, emotional, and mental health _perfect_? Think deeply about the ways and places that it isn't, and talk to a licensed professional about them. Assume you have diagnoses until proven otherwise." But of course I'm not a licensed professional so I have no idea if that's a good way to look at it for others. It works for me though.
## Questionnaires
This is not an exhaustive list of course. If you think you may have X, you can probably find the official questionnaire online.
1. Depression: https://patient.info/doctor/patient-health-questionnaire-phq-9
2. ADHD: https://add.org/wp-content/uploads/2015/03/adhd-questionnaire-ASRS111.pdf
3. Anxiety: https://adaa.org/screening-generalized-anxiety-disorder-gad