For a period of time after my return to the Church I thought that holiness meant doing tons of what I considered "holy stuff" for the Lord. Being a perfectionist , I really laid it on thick. Daily Mass, Bible reading, spiritual reading, visits to shrines, prayer...you name it, I did it. You can probably guess where all this eventually led.
Spiritual burnout to the nth degree.
Still, my little foray into pharisaism taught me many lessons and it was probably a good thing that I learned this early on. The spiritual burnout taught me not to depend on outward information and conformity but to seek transformation of the innermost self. I could have spent many, many years walking around thinking that I was fine had the Lord not stopped me in my tracks and showed me that conformity was not enough and that he was seeking to transform my heart.
There are great dangers in settling for a mere pseudo-transformation rather than an authentic one. A pseudo-transformation leaves one thinking that because they look outwardly holy and are performing holy actions that they are indeed holy and pleasing God when, sometimes, nothing could be further from the truth. By far, the greatest obstacle to transformation is thinking that you are holy and the best piece of advice I could ever give to anyone who has recently turned to the Lord is this:
Never, ever, believe that you have reached the "pinnacle" of holiness because all progress stops at this point. The Lord is so merciful that He reveals our sinfulness in "layers" so as not to overwhelm us. We must pray for humility so that we can remain open to what the Holy Spirit wants to reveal to us. If we are proud and resist his conviction it can "stall" our spiritual progress for some time.
Our natures are far more fallen than we realize and it is the sheer mercy of God and his infinite love for us that reveals these "hidden things" slowly rather than all at once. If we open our hearts to his work we can be sure that He will transform us into the image of his Son and welcome us with open arms when we leave this earth. God finishes what He begins in those with goodwill.
I still do the things I mentioned above (Mass, Bible reading, prayer, etc...) but I use prudence and try not to overdo it. My reasons for doing them has changed and this has made all the difference.