Well who loves a virus in their computer, hacked accounts, stolen data or corrupt data? No one right. So apart from having a nice and durable anti-virus system there are certain habits which must be developed for safe computer experience.
1. Use a VPN everywhere
2. Enable two-step or two-factor authentication for your online accounts
3. Always lock your PC
4. Encrypt your drive
5. Make sure your own Wi-Fi network is secure
Read the complete article here: http://www.computerworld.in/how-to/5-secure-habits-paranoid-pc-user