As WordPress show your post in same order what you will do if you want to change the order?
The custom solution is changing the WordPress post publish date.
But i think its not a convenient way to do it right?
What if you can do it by using a plugin?
First thing you need to do is install and activate the Post Types Order plugin. After activation, you should notice a new tab under Settings » Re-Order.
This is where you can change the order of your posts by simply dragging and dropping them and if you have any custom post types a Re-Order link will appear for those as well.
Download Post Types Order Plugin.