Correct Push Up Technique

This is something I struggle with. According the Zach Dechant in this article, the correct push up technique is with the hands shoulder width apart and then the elbow come down at a 45 degree angle. Most people (including myself I think) make the mistake of placing the hands too wide and with the elbows flared out. If you watch the video you’ll also see how deep you need to go in the push up, pretty much touching the ground with your chest. That is so hard to do. I try but crap it’s hard.