Actually, I have been losting my goal of lifefeeling aimless, so I am trying to find a new goal forto livinge better and happier.

I think this might be what you meant?

A YouTuber said, if you want to live your own life you need to select one goal based on what myyour interests and my strengths.

Assuming you mean the person who made videos on Youtube.

It sounds weird to talk about "my interest" and "my strength" - we all have many interests and strengths, so it's not clear which one you mean. You could say something like "my biggest strength" or "my fondest interest".

I know what is my interests are.

I like learning somenew thing news, writing notes, teaching something and drinking tea.

"teaching people things" would've been okay, but we can just say "teaching".

But I don't know exactly what is mymy biggest strength is.

For a week, I have been thinking about what my strength isit.

But a little more natural as "I have been thinking about it for a week."

Today, I found one thing: that I can do something continuously.

Need some form of punctuation here. Many would work but a colon feels best.

For example, I have strivedn to keep my morning routines for 2 years.

"strive" is a difficult word to use. "striven" and "strived" are, in fact, both valid forms for the past participle - but here "strived" sounds really bad to my ear. I don't think there's any rules about it, sometimes one form or another just sounds better.

Regardless, you have to strive to *do* something.

I have three records of days in a row on this site, kindle and Duolinggo app.

Unclear exactly what you want to express here. Just "I am keeping a streak going on each of these three platforms"?

At this time,So, now I have a homework - to combine my strength and my interests.

Here "my strength" is fine because it's referring back to the earlier change I made "my biggest strength".

I don't know what it will come to me, but I will do my best about itto think of something.

Had to guess at your meaning here.