YOU SAID:

I took my decision ! Today is the good day!

INTO JAPANESE

私は決心しました！今日は良い日です！

BACK INTO ENGLISH

I made up my mind! Today is a good day!

INTO JAPANESE

決心しました！今日はいい日です！

BACK INTO ENGLISH

I decided! Today is a nice day!

INTO JAPANESE

私は決めた！今日はいい日です！

BACK INTO ENGLISH

I have decided! Today is a nice day!

INTO JAPANESE

私は決心した！今日はいい日です！

BACK INTO ENGLISH

I decided! Today is a nice day!

INTO JAPANESE

私は決めた！今日はいい日です！

BACK INTO ENGLISH

I have decided! Today is a nice day!

INTO JAPANESE

私は決心した！今日はいい日です！