At some point in time, in America, there was a popular saying "if it feels good, do it"... I can't recall exactly when this was, but I think it was the early 70's.
Anyway, this saying infiltrated the culture in all kinds of ways. People had posters, bumper stickers, t-shirts, all kinds of things with this saying on it. It justified a lot of things. Anything and everything was acceptable as long as it "felt good to you".
It's obvious looking at materialistic society what the problem with this concept is of course.
However, this concept also infiltrates spiritual life in a more subtle way. People get the idea that it's perfectly fine to make certain that they are always "feeling good" about everything that goes on with their spiritual life.
If you only do the things in devotional service that you "feel good" doing, and you only associate with the devotees that make you "feel good" when you are around them, and you only read or pay attention to the aspects of scripture that make you "feel good" when you read them, there's a problem with your spiritual life.
The problem is that while Krishna consciousness is certainly blissful and there are lots of things to feel good about, it is still a process of purification. We are in need of purifying our consciousness. Yes, the soul itself is perfectly pure, but it's in a dirty, covered over state.
Srila Prabhupad has compared this to a diamond, covered by dirt and needing to be cleaned in order to see it's true beauty.
So, all this covering, this contamination, that has been there for so many lifetimes, has to be cleansed away. If you want to see the true beauty of the diamond, you cannot allow the dirt to remain.
When you start clearing and cleansing away dirt, it's not usually a very beautiful thing. Anyone who's ever had to clean anything that has been neglected for a while knows this. The dirt can often seem to be more dirty as you start trying to remove it, than when it's just sitting there and nothing is stirring it up.
It's the same thing spiritually. As you start to make progress in spiritual life, there is going to be some "clearing" occurring. There will be "dirt" that comes up in your heart, in your consciousness. You have to be willing to look at these things, and willing to allow them to be cleared away if you want to make progress.
Therefore, it does not benefit you to "insulate" your false ego, and mind and senses, from this spiritual purification by eliminating all the things in spiritual life that don't "make you feel good".
If you only associate with devotees who make you "feel good" and you only read (or pay attention to) the aspects of scripture that make you "feel good" about yourself, you are running the risk of reinforcing your own ego based concepts and illusions with spiritual information.
Spiritual advancement requires a lot of honest introspection and willingness to look at our own faults and fallacies and imperfections, and then be ready and willing to clear them out, let go of them. It's a good place to practice detachment from our own false ego (false concepts of ourselves).
