Firstable ,, I thank gGod for every thing I already have .

"Firstable" is not a word in English, but you could say: First, First off, Firstly
"God" is capitalized (for an Abrahamic faiths such as Judaism, Christianity, and Islam)
"Already" is good to add here to emphasize you are speaking to what you have now, before describing your dreams

My dream life is to be Sea successful , wealthy person . I willould design my dream house and make my family pleased and delighted. I willould provide every thing they need . I also want to travael and discover the world with my family and enjoy every minitute in my life .

No need to capitalize "successful."
"I would" not "I will" because this is a hypothetical situation

I really want to make a differentce in this world and help it to be more advanced.a better place. Without forgetting to help the poor and needy people around the world , I will do my best to make their lifeves better.

We would typically say "a better place" here. The word "advanced" almost signifies technological advancement, like if you were to be some kind of scientist or engineer and make breakthroughs in research.

In this sentence, you can say "I will" instead of "I would" if these things are true even if you do not become wealthy (you will try to help the poor even if you are not rich).

Firstable ,ly, I thank god for every thing I have .

My dream life is to be Sea successful , wealthy person . I will design my dream house and make my family pleasedhappt and delighted. I will provide every thing they need . I also want to travael and discover the world with my family and enjoy every minitute in my life .

I really want to make a differentce in this world and help it to be more advanced. Without forgetting to help the poor and needy people in need around the world , I will do my best to make their life better.