Training at home may seem like a chore at first. If this is the case, do not force yourself to practice. Give it time. Do only what you feel like doing...
Eventually you forget that there was a time when you did not do tai chi. The tai chi seeps into your everyday body usage and you begin to do things differently, with more awareness.
Again, this becomes habit. For the tai chi to work, you must relax and be receptive to it. If your enthusiasm grows you will exercise because you want to. Not because you think that you ought to.