I have a friend of mine who promised me to do some task, but at the end of the day, the time wasn't enough for him to complete the task. He sent me messages of which he says that he's really sorry. I want to make him relax and comfort, what's the best way to phrase it?
"Feel comfort, it's ok, you can do it later when you have time" OR "Feel convenience, it's ok, you can do it later" Or maybe other better natural phrases?