In my case, I find it easier to do things like exercising and having piano lessons everyday at a fixed time to make them part of my routine, instead of doing them at random times three times a week.
ご質問ありがとうございます。
"In my case,"=「私の場合、」
"I find it easier to do things like exercising and having piano lessons everyday at a fixed time"=「決まった時間に運動やピアノのレッスンなどを毎日する方が楽だ」
"to make them part of my routine,"=「私のルーティンとするには」
"instead of doing them at random times three times a week."=「週に3回、決まっていない時間にするよりも。」
ご参考になると幸いです。