Every time we sin and do not repent, we march a little closer toward hell. I am being blunt but realistic about it. Even if you just end up in purgatory, every little sin would increase your suffering for purification there. And little sins can add up fast over a lifetime. For example, if you habitually use the F word in your daily conversation with others, over years you can easily reach saying it tens of thousands of times. Always repent your sins right away and try not to sin again. This is the only way to halt your march toward hell. To go all out, seek to attain union with the Lord through the Holy Eucharist and you can forget all about hell.