I keep asking that question, too, and I think there’s no single, simple answer. It takes time, and it’s dependent on you as a unique individual.
I made the Consecration this past Christmas and I can give you a few ideas that I have either tried or have been told to try:
I became enrolled in the Brown Scapular, and as a part of this devotion began to pray 5 decades of the rosary daily, which I had never thought would be possible.
I purchased a book of Marian prayers including the Little Office of the Blessed Virgin, but I haven’t gotten around to using it.
Go to Confession regularly, once a month or more. A daily examination of conscience might be a good practice too.
Try improving your life in little ways daily; it might seem like nothing is happening for a while, but then, months later, you might see changes. For example, I hate talking on the phone, and I procrastinate when it’s time to return a call; the fact that the call is usually business-related is even worse. I’m trying to call people when I know it’s time to call them, and not put it off. I also tend to stall and be purposefully late when I have to go somewhere I don’t want to be. When I fail to be prompt, I confess it.
Some have suggested abstinence and/or fasting on Wednesdays and Saturdays.
Tell Jesus every day that you love Him will all your heart, and ask for love to love Him with.
Go to Mass during the week if possible.
You could wear a little blessed chain as a symbol of your consecration (the Montfort Fathers count the necklace chain for their medals as a “Little Chain.”)
I already wear a MM. I say prayers to Mary pretty much every day. Am I supposed to be doing something else? Please help, thanks!