I need a sentence reviewed Я знал, ты наполнил мою голову с ложью, чтобы манипулировать со мной.

How do I say... How do I say "for my own good" or "for the better" in Russian?The whole sentence is "I've changed, for my own good/the better."

Dilemma – от, по Здравствуйте. ^o^ So based on the little that I know of Russian, I tried translating the following: I learned it by watching you. – Я узнал это от/по смотреть тебя. Now, I don't know... 1. whether "от" or "по" sounds more fitting 2. if "смотреть" is correct Any help would be appreciated.