First of all, I think all you have done isr actions are right as long as youthey don't affectharm others.

"Affect" doesn't specify whether your impact on other people was good or bad, so I think "harm" conveys your meaning better.

Doing the things you like is the happiest thing in one's lifekey to happiness.

Learning can always makes me happy.

SEver since I started learning English, I have never felt bored, and time always passes unconsciouflies.

"Time flies when you're having fun" is a saying that I think captures what you mean here.

I am very glad to receive your messages because I am able to learn some new vocabulary and (read/hear) your explanations every time.

After receiving your voice messages, I first dictate them out, then repeat your messagesthem again and again.

So thank you for learning languages with me and exchanging ideas with me, and I am very grateful that you gaive me the chance to learn English.

Using the past tense of "give" makes it sound a little like you're saying goodbye.

Everyone has their own lifestyle and we should give them respect them.

Learning can always makes me happy.

Since I started learning English, I have never felt bored, and time always passes unconsciously.