I hate to be brutal, but aren't a lot of these upsetting experiences that do damage simply normal life, rightly or wrongly?
None of us come away from life unscathed, without pain, without suffering, without memories we wish we didn't have, that might keep us awake at night.
@Treeper22 Understanding that trauma is actually quite widespread is a helpful step forwards, as it will enable people to take better care of themselves and therefore minimise the impact of negative experiences in life going forwards.
The fact something is common doesn't mean we should just dismiss it. We can prepare better for things that might be difficult, behave more healthily during it, and respond in a healthier way afterwards.
Stiff upper lip belongs in the past, it really doesn't work - it just results in deeper damage that lasts longer.