Tis_Bearself
Patron
St. Therese actually warned against this kind of thinking.Most of us will end up in purgatory regardless if we receive indulgences or not.
She said the soul gets what it expects from God. If you go around thinking, “I’ll probably end up in purgatory” or “It’s impossible for me to avoid purgatory” then yes, you will end up there.
I prefer to throw myself on God’s mercy and trust him to help me avoid Purgatory.
There is also a very helpful old “How-To” guide by Fr. Paul O’Sullivan called “How To Avoid Purgatory”, available online for free from EWTN. Of course it is not a guarantee, but if someone assiduously did the good things in the book, I am sure God would take that into account.