The "secret" to transforming yourself successfully is really simple. You might even say obvious. It's letting the Lord do the work. Jesus told us that apart from him, we can do nothing. This is absolutely true. I am talking about doing things that truly give honor and glory to God.
When you receive the Holy Eucharist, you become mystically united with Jesus, who is the source of all the graces that can benefit you. This is the time to "get greedy" and ask for all the graces he can possibly give you to make you holy. If you are in good grace and really mean it, how can he refuse you, as he loves you so much? If you strive to become holy on your own, you'll find it about as effective as making a New Year resolution stick. But if you put your trust in God and let him do the work, everything becomes automatic over time. The Holy Eucharist is the Lord himself, transforming you.