Relaxation
Try to touch the piano keys lightly and gently. If your fingers are rigid, stiff, with the anxiety of trying to get the right notes at the right time, it will be much more difficult to get it right. A relaxed hand is much easier to get the the right place at the right time.
Enjoyment
Play something you like and that you are familiar with. In time, you will be able to look at any sheet of music and play something close to what is written, but there is no sense adding the burden of playing unfamiliar music on top of learning to press the right key. When we learned to type, we learned by typing familiar words. We didn't learn to type obscure chemical names or technical jargon. The same applies to the piano. When starting out, play what is fun for you. Anything you play will develop your skill.
If you are practicing to play by ear, play what you are familiar with: advertising jingles, TV theme music, popular folk songs, etc.