My advice to anyone that wants to become more of a full time thong wearer, is to just get rid of all your other underwear that isn't a thong! then you have no choice.
When i first started wearing thongs, after a few months i realised i had worn a thong about 10 days in a row without really thinking about it, and that i was probably going to wear one the next day and the day after that... so i just got rid of all my other underwear and bought more thongs! Best thing i ever did!