Simple. (Purely my personal opinion) 1) Divide the complex problem into small yet challenging chunks of problems. 2) Totally forget about the large/complex pr

Simple. (Purely my personal opinion) 1) Divide the complex problem into small yet challenging chunks of problems. 2) Totally forget about the large/complex problem. 3) Focus/Solve one problem at a time, the way you already do. 4) In the end, ask someone else to weave the individual solutions to solve the original problem. (or DIY if you prefer to!)