I am so upset

I baked a pie yesterday, an awesome Marie Callender's Razzleberry pie that I proceeded to forget and baked it for 2 1/2 hours. Needless to say it was a goner and I gave it to the birds which they haven't even ate it yet. So I bought another today and it turned out great but the (Beef Chuck Shoulder Cross Rib roast) that I bought and cooked exactly like the cookbook said was so tough, sorry, I had to use a butcher knife to cut it. Needless to say I couldn't eat it but my DSH ate two slices.He has much better teeth than me but it took him a while to eat his dinner. Oh well, at least we have some awesome pie and whipped cream if I don't screw up the whipped cream. I have just been in tears. Very very depressed. Cost me $17 for that roast. Can someone please tell me how you would have cooked that roast.