Setbacks and failure are a natural part of learning new skills, whether we want to admit it or not. When you were a kid and first hopped up on your bike, did you fall or were you perfectly balanced from the time you started? Of course you fell! But then you got back up again...fell some more...got up some more….until the times between falling and getting up were greater because you were simply falling much less often.
It's frustrating when it feels like we’ve moved 2 steps forward and 3 steps back, but this often isn’t what’s really happening if we're persistent. It’s more like 3 steps forward, another small 1, then 2 back. When you’re learning a new skill, you should factor in “setbacks”. If you do, you’re less likely to quit because you understand that it’s all just a part of the process.
There’s no “never”, just “not yet”. Remember that.