As some of the other people suggested, you should look into various third party software available for this purpose. they are quick easy to use. Manual method is only good if you are not planning to change or upgrade to a new system and sometimes they may turn out to be a bit complicated for certain users.
I recommend you to look into Sysinfotools OST to PST converter, it is used for the mentioned purpose and further you may use it to recover data from your OST file if at all it gets corrupted.
Let me know if it helps or if you have any further questions :)