Flexible Optimism.

You're the best !:)

Or “You’re the best. :)”

I hope this information will be useful to you.

Or: “I hope you find this information useful.”

Note: I want to use American English.

Or, more natural: “Note: I am aiming for the American English dialect.”

As a plethora of studies saihave said/reported, optimism is benefitcial,; it improves relationships, learning, attention span and it make us happier because it also diminishes stress and anxiety.

However, a few optimism is harmful as a lot of itit is something that is only good in moderation.

I didn’t really understand but I tried my best, let me know what you wanted to say!

The thing is that sometimes we overestimate our control over the(certain) things.

But there's a solution: we can, instead, strive to have a flexible optimism which consist in evaluating constantlys of constantly evaluating our abilities when facing a (new/particular/specific) situation, and choosing to either increasinge or decreasinge our optimism when it is something we don'’t have too much control over it.

More natural suggestions !

How can you use it forthese ideas in your daily life?.

More natural!

I hope you're doing well, today I want to write about one of my favourite books called "Reality is Broken" by Jane Mc Gonigal.

"Favourite" is British English spelling.

Thank you for correcting mey mistakes.

Sounds better.

As a plethora of studies have said, optimism is benefitcial, i. It improves relationships, learning, and attention, and it makes us happier because it diminishes stress and anxiety.

Needs to be split into two sentences. For the list of things it does, you have two main things: "improving" and "making us happier". And improving is split into three things: "relationships, learning, and attention". So you need both and's, and separate the two main things with a comma to make it easier to understand.

However, a fewtoo much optimism is as harmful as a lot of ittoo little.

I'm guessing you mean this to be the other way around.

The thing is that sSometimes we overestimate our control over the things.

"The thing is" is slangy.

But there's a solution: we can have a flexible optimism which consist in evaluating constantlys of constantly evaluating our abilities when facing a situation and increasing or decreasing our optimism when we don't have too much control over it.

I'm not completely sure what this sentence means.

How can you use it forin your daily life?.