I'm like you. Back when I used to practice my biggest problem was pacing. When you bowl alone you tend to bowl too fast. What I did was get a coke or glass of water. After every frame stop, take a sip, take a breath then bowl again. It was easier when you had to keep manual score - you might try turning off the scoring and do it by hand to slow the pace. A side advantage of the coke thing is that every now and again you have to stop and go to the bathroom, which slows things even more, lol
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"I do desire that we may be better strangers." Willie the Shake, As You Like it(III,ii)
"I'm capable of being just as sorry as you are, Dimitri."