Please tell me more: are you training on water, or are you training on land?
Around my house I have lots of motivational posters about rowing.
It is to always remind me that no matter how hard the training is, rowing is always fun, and I am always striving to do my best.
There are different types of training in my experience, depending on whether you are rowing indoors or outdoors. If you are rowing indoors, I would suggest that you do sprints 500m and try and get a personal best, or sometimes I do a "rowing marathon" and I row for 30 mins non stop.
If you are rowing outdoors then I would suggest you to do different types of training like land training (eg push ups, running around, etc)