To keep your Christmas tree from drying out, you should always make sure to water it regularly. Make sure to keep the water level in the tree stand at the recommended level and top it up daily if necessary. You should also place the tree away from direct heat sources, such as fireplaces or radiators, and avoid putting it near vents or drafts. Additionally, you should keep the tree away from windows to avoid it drying out in the sunlight. Finally, if your tree starts to look dry, give it a spritz of water and mist the branches regularly to help keep it hydrated.