You are, probably, using your Mac constantly for your business or school work. Therefore, you heavily rely on your Mac’s performance. Thus, you really do not want any problems with your Mac. Macs are relatively hassle-free, still, you can greatly decrease your chances of having issues.
1- Keep your Apple software up-to-date
Simply, go to Apple menu > Software Update. If there is an update, download and install it. You need to enter your admin user and password.
Software Update (in System Preferences) can also be configured for automatic upgrades. By default, it automatically checks for updates weekly.
2 – Updating your Apps purchased from the Mac App Store
The software update will not update your apps. To update the apps that you have downloaded from the Mac app store, choose App Store then click “Updates”.
3-Back up your data regularly
Back ups are always good. For instance, you may need to restore your entire system from a backup. You should back up your Mac regularly. You can use Time Machine (Mac OS X v10.5 and later). Time Machine can automatically back up your entire Mac.
4- Periodically restart your Mac
You mac may seem slower after using it for a few days or weeks. Restarting your Mac may solve this issue.
5- Clean your Mac
Periodically clean your Mac. Use only a soft, lint-free cloth and avoid any cleaning material that can damage your Mac.