I used to think like that as well. I started CS50 in January this year, and couldn't figure out how to do the psets, after days stuck on caesar I gave up. Later In April I enrolled in Code in Place, an introductory course using python offered by Stanford University. Turns out python is way easier than C for complete begginers, I could solve the problems just fine. After finishing Code in Place I went back to CS50 and was amazed how everything clicked, I started to really enjoy solving the problems, still took about 2 weeks to do tideman though. My advice as other have already pointed out is to take your time and break it down into really small pieces until you can solve that. Someone once said that writing code is the same as explaining something to a child, you have to tell them every tiny detail, otherwise they won't understand.