Welcome to Helpful Gardener! When I read that someone is having problems with houseplants the first reason is generally due to overwatering. Rootbound plants are often the second reason. Unfortunately you haven't given us any information to work with in helping you, such as what you see going on with the plant. Are leaves turning color, do you see insects, does the soil smell, how long has it been in it's current pot, what kind of pot and does it have drainage holes? Do you let water sit in the saucer after watering? What are the sun conditions?
This site has growing info that should be helpful. If that's not enough let us know what is going on and we'll try and help.
By the way, it's best to state the problem or plant in the title as you are more likely to have more people look at it. Something like, 'Help with Coffea arabica' would be helpful.