Who are you to say what a small challenge is for someone?
Genuinely, please?
You mentioned work related stress in earlier post.
I've spent most of the last 12 months off for work related stress, when most of my colleagues coped fine. Do you know what facing the stress without therapy gave me? PTSD. Actual flashbacks, nightmares, insomnia, anxiety, panicky PTSD. So, facing things without the necessarily skills or toolkits doesn't build resilience. It creates trauma because it breaks down resilience.
I'm positive for many people they'd be able to shrug off the things that caused my stress easily, because they may naturally have adapted and developed the tools to manage the situation that I haven't. The event that catalysed everything for me was a phone call.
You seem to be very narrow minded when it comes to the impact of the struggles people face. It could be a singular or series of small events, that have caused a death by a thousand papercuts situation.
You should focus more on why you don't think it's appropriate to reach out for help before a problem spirals into something unmanageable, that why other people have found the strength to reach out for help for things that could be perceived as insignificant by those externally.