At first, I started learning English conversation because I had to, but now it's one of the things that gives me joy in my life.
ご質問ありがとうございます。
"At first, I started learning English conversation because I had to,"=「最初は英会話をやらなければいけないから学び始めました」
"but now it's one of the things that gives me joy in my life."=「でも今は私の人生に楽しみを与えてくれるものの一つです。」
ご参考に。