Some things in life, particularly in crafting, need not be feared. Nevertheless, there were and are things that I do fear.
One thing that I feared was set in sleeves. I'd see a pattern I liked, realize that the sleeves were set in, and quickly eliminate said pattern. Turns out that I had nothing to fear. Case in point, "Hey, Teach," my first garment with set in sleeves. I did my homework prior to seaming, and found this Berroco video very helpful. Turns out that set in sleeves aren't difficult at all! Project details here.
Something else that need not be feared is the disappointment over a project that is not quite right, because blocking does indeed help. The top of this little shrug curled, and after crocheting, I was very disappointed and almost ready to frog. I thought I should try blocking it first though, and blocking did indeed prevent the curling from happening. Details ravelled here.
And finally, something else that should not be feared is that knitting plain vanilla socks will lead to major boredom. If you use fun self striping handpainted yarn, they will knit up in no time. Details including yarn source are here.