If you have been reading my posts, maybe you may have asked why I'm so obsessed about being disciplined.

But those things that I wanted to do, never came trueo fruition because of my lack of discipline.

また、

- But those things that I wanted to do, never came to pass because of my lack of discipline.
- But those things that I wanted to do, never were realized because of my lack of discipline.
- But those things that I wanted to do, never were accomplished because of my lack of discipline.

My biggest goals are to live in Canada, to travel to many countries, like Japan and Norway, and being the best version of myself.

すごい！

To accomplish thoese goals, I need to be disciplined because I don't want to fail in these goals as in my last goals that I didn' acomplishedas I had with my previous goals, as I really want to come trumake these goals come true.

I need to get a degree, learn Norwegian, Japanese, and English and to continue exercising, t. To accomplish thoese goals, and for that I need a lot of discipline.

If you have been reading my posts, maybe you may asked why I'm so obsessed about being disciplined.

But those things that I wanted to do, never came true because of my lack of discipline.

My biggest goals are to live in Canada, to travel to many countries,; like Japan and Norway, and being the best version of myself.

To accomplish those goals, I need to be disciplined because I don't want to fail in these goals as inthem like my last goals that I didn't accomplished, as. I really want to come true these goals.

I need to get a degree, learn Norwegian, Japanese, English, and exercising, to accomplish those goals, and for that I need a lot of discipline.

If you have been reading my posts, maybe you may have asked why I'm so obsessed about being disciplined.

But those things that I wanted to do, never came true because my lack of discipline.

My biggest goals are to live in Canada, to travel to many countries, (like Japan and Norway), and beingto be the best version of myself.

This is how I would structure this sentence.

TI need to stay disciplined to accomplish thoese goals, I need to be disciplined because I don't want to fail in these goals as in my last goals that I didn' acomplished, as I really want to come true these goalsto achieve them like my last ones. I really want these dreams to come true.

I would use "stay disciplined" here instead of "be disciplined," since you are already in this moment disciplined. The word "goals" appears many times, so I reduced the redundancy a bit here.

I need to get a degree, start exercising, and learn Norwegian, Japanese, and English and exercising, t. To accomplish thoese goals, and for that I need a lot of discipline.

If you aren't exercising now, say "start exercising," but if you are already exercising now, say "keep exercising."

If you have been reading my posts, maybe you may askhave wondered why I'm so obsessed about being disciplined.

But those things that I wanted to do, never came true, because of my lack of discipline.

My biggest goals are to live in Canada, to travel to many countries, like Japan and Norway, and being the best version of myself.

To accomplish thoese goals, I need to be disciplined, because I don't want to fail in these goals as in my last goals that I didn' acomplished, as I really want to come true these goalsI had the ones in the past. I really want these goals to come true.

I need to get a degree, learn Norwegian, Japanese, English and exercising, to accomplish thoese goals, and f. For that, I need a lot of discipline.

If you have been reading my posts, maybe you may askhave wondered why I'm so obsessed aboutwith being disciplined.

But those things that I wanted to do, never came true because of my lack of discipline.

My biggest goals are to live in Canada, to travel to many countries, like Japan and Norway, and beingto be the best version of myself.

Your original version was correct, but since you've used "to + verb" with all the other clauses, it sounds nicer/more natural if the third one matches :)

To accomplish those goals, I need to be disciplined because I don't want to fail in these goals as in my lastI did in my previous goals that I didn't acomplished, as I really want to come trurealise these goals.

Here, realise means "to make something real"

To accomplish these goals, I need to get a degree, learn Norwgian, Japanese, and English, and exercising, to accomplish those goalsI need to exercise, and for that I need a lot of discipline

I think starting the sentence like this is a bit clearer