Cut and peel your potatoes into equal sized pieces. Place them in a large pot and fill the pot with water until the potatoes are just covered. Heat over medium/medium high heat. Cook until the potatoes are tender. Use a colander to drain the water out and then return the potatoes to the pot.
In a small sauce pan or frying pan, melt your butter. When the butter is melted add the garlic and saute for 1-2 minutes. Then pour the butter garlic mixture in to the potatoes, along with the cream cheese and chives.
Mash with a potato masher, or use an immersion blender until your desired consistency is met. Add salt and pepper to taste.