When I was an MS in my phase of making an effort, I used to get very nervous and any item really ruined that whole day or two before due to nerves.
Then one time I had the bible highlights and dutifully prepared for it. At the start of the meeting when I handed in my slip I suddenly realised I had prepared the WRONG weeks chapters,...
School overseer said, just do the best you can. I had 15 minutes inc song and prayer to go and prepare the correct material. I kept it simple, no one in the audience had any idea i'd only had 15 minutes to do it and many said it was an excellent item.
I learned a valuable lesson that night, I had been over preparing and making it into more of an ordeal than it ever needed to be. From then on I set myself a rule of 1 hour maximum to prepare any item I got. I never ever got really worried or anxious about items after that.