Anything Worth Doing Is Worth Doing Badly. It is, my friends. In other words, we have to be willing to suck in the beginning if we are going to progress to the level of mastering something. Many people are not willing to be novices anymore. Young kids? Yes, they are kind of OK with that, because they are leaning new things all the time. They are young, lots of stuff is new. Early on in their life they are used to not being good at things. And, this is why they will bang on the guitar for months until it sounds good more often then not. Eventually, trough trail and error, they get the sound they want.
Now, adults are a different animal. Adults have done things, have seen things and they often expect that new things they learn to also come easy. They are afraid of getting their ego bruised if they suck. Not being good at anything first is actually step 1 on the journey to getting something right. You keep going. Just as a parent who does not give up on their child when they are learning to walk, you also try again. I have never seen anyone who could not play good basic guitar. I have never seen anyone whose fingers were too short, too long, too stubby, too whatever. And, I taught 1000s of people. Parents encourage their children to practice walking versus giving up because the first few steps were shaky.
So, remember, if something is hard to get right, that is a very necessary step to go through. I also call that success tax.