Is it easy or hard to be holy? That depends upon how you approach it. Let's say that you go on a long trip which you really don't want to do and you are all by yourself. Being unhappy, you feel that the trip is just taking so long and wish that you have not started it in the first place. Now, let's say that this time you take the same trip and you have some friends to talk to along the way and you rather enjoy the conversation and company. Before you know, the trip is almost over and you wish that it isn't yet. These two examples just illustrate how one's view can directly affect the outcome.
When it comes to wanting to be holy, you could focus on you own sinful state and tell yourself that you'll never make it and give up, or concentrate upon God's mercy and power and ask for his help. When you really mean it, he will reach down to make it easy for you to fulfill your wish. (Always save your own energy and tap God's power.)