I know what you mean even though I'm still struggling with the simple chords. But I feel myself getting better with those each day. When I reach full chords I know it'll be the same struggle but it'll be worth it. I found the hardest thing for me to overcome was my mindset that "I'm not a kid learning this so I should be able to do this". That led to a lot of frustration and I quit trying to learn once before. Now I know to have patience and with practice it will come. Like you said, you overcame the simple chords and eventually you will overcome this struggle too.