When plan A does not work, have a back up plan! That is when you move forward to plan B, all the way down to Z. We can persist on Plan A, but if it’s not working, you simply have to move elsewhere. Do not get mad, but simply strategically make decisions that will be equal to A or better. Everything happens for a reason and there is a reason A didn’t work out in the first place.
Knowing that you are prepared for whatever is great in making sure things get done (especially business perspective). Don’t have too many expectations for A. It may feel like the best plan, but life always has a way. You never know plan B is probably better than A.
Always have a back up plan! A can work, but you just never know.