Now let's see two ways
1. From "Lost your password" Option
2. From "WordPress Database(phpMyAdmin)" option.
1. Lost your password option
+ First go to your site wp-admin link Example: http://youdomain.com/wp-admin
+ Then click on "Lost your password" and write your WordPress "user name or Email address". Now click on "Get New Password". Please follow the picture below to understand it's easiest way.
+ By clicking on email link to ask you to set a new password. Then You need to be entered your password twice (See the below image). Then click on "Reset Password" button and your new password will be set. By this first way, you can reset your WordPress password.
2. From WordPress Database (phpMyAdmin)
+ For this first login into your cPanel and go to cPanel > section Files > File manager. Then you need go to the root folder of your site where you have installed WordPress.
+ From root folder find wp-config.php file and open it. There you will find your Database information. See the below image
+ A list of database will appear. Click your WordPress database.
+ Look for wp_users and click on it.
+ Locate your user name under user_login
+ Click Edit
+ Then click on Go. See the below image