Yeah, dips are not easy at all. It's not like situps or push ups where you can do 20 straight off the bat. Most people WILL struggle to push out one on their first few times.. What you CAN if it is frustrating you not being able to do one full dip is to go half way.. Dips are an absolutely indispensable exercise when building strength and size in your arms so don't give up on it.. One trick is if your trying to do one dip, don't think of doing one, completely skip thinking about the first dip and think of pushing out 2. concentrate on getting that second dip and you'll find the first 1 comes easier (even if you can't get 2 our) ... Then when you are up to 2, just think about getting the 3rd one out.. Be patient & stick with it and you'll slowly building up to doing 10 - 20..