From time to time I post articles about backing up your Mac. I do several backups of my iMac using Carbon Copy Cloner, ChronoSync and Backblaze Offsite. There are several ways to backup your Mac, but suffice it to say just using Time Machine is not enough these days. Some kind of backup is better than nothing, but our backup strategies need to be more robust to protect our stuff. This article by Bob LeVitus (Dr. Mac) presents a really good backup process. Check it out. It may be more than you need, but you may be able to adopt some part of it for your backup strategy.