There are many ways to keep your account secure.
Make sure that the email address that you have used to register has a strong password with a combination of lower case and upper case letters, symbols, and numbers.
Enable 2-step verification on your email account.
Always check the login information of your email to see if there are any suspicious activities related to the account.
Make it a habit to always log out of devices that you normally share with other people even with friends and family members.