Our “mind” power is theour most powerful weapon. Our “mind” power is our most powerful weapon.

This is correct, but it doesn't match the context: using our mind as a "weapon" is not related to OCD. Consider "tool" instead of "weapon".

JI just learned this word from my friend’s post. I just learned this word from my friend’s post.

JI just learn this wordterm from my friend’s post. I just learn this term from my friend’s post.

And I also checked it out on a few articles from internet as well. I also checked it out on a few articles from internet as well.

I think this is what you mean; you did some research on it from the internet, right?

And I have also checked a few articles from ithe Internet as well. And I have also checked a few articles from the Internet as well.

After knowing more detail about this illness., After knowing more about this illness,

After knowlearning more details about this illness. After learning more details about this illness.

My personal commentopinion would be that we all have this OCD. My personal opinion would be that we all have OCD.

Your opinion is that all people have OCD at least a little bit, right?

My personal comment would be that we all have this OCD. My personal comment would be that we all have OCD.

More common is "personal opinion".

But for some people, it might be somore serious, hence they need doctor’s helpand therefor they need help from a doctor. But for some people, it might be more serious, and therefor they need help from a doctor.

But some people's condition might be so serious, hence they need a doctor’s help. But some people's condition might be serious, hence they need a doctor’s help.

Or "...so serious they require a doctor's help."

Some people may be having that in slightlyhave OCD symptoms, but they are less serious than people with OCD. Some people may have OCD symptoms, but they are less serious than people with OCD.

by adding the last part, you can make it more clear that you are comparing them with people who have OCD

Some people may be having that in slightlyonly have a minor case. Some people may only have a minor case.

In fact, I saw some friends around men many of my friends, I notice that they all have thatsome OCD behaviors. In fact, In many of my friends, I notice that they all have some OCD behaviors.

In fact, I saw some friends around me they all have thatsaid they have OCD behaviors. In fact, some friends said they have OCD behaviors.

There's a mismatch between "some" and "all". More typical would be "they have OCD tendencies", or even the colloquial "...they are a bit OCD".

But they all consider that is aem to be “normal”. But they all consider them to be “normal”.

But they all consider ithat is a “normal”. But they consider it “normal”.

If we control thait well, we can become soachieve success in many ways. If we control it well, we achieve success in many ways.

If we control that wellour mind, we can become so successful in many ways. If we control our mind, we can become successful in many ways.

But if we loss control, it will backfire ourselven us. But if we loss control, it will backfire on us.

But if we losse control, it will backfire ourselves. But if we lose control, it will backfire.

You want to dance with the devil? You want to dance with the devil?

I don't think that this idiom is appropriate here. What do you mean to say?

YDo you want to dance with the devil? Do you want to dance with the devil?