You don't, this is the kind of project which causes "emotional bankruptcy". The company you are working for is defined by the team working there, not by the disruptive projects you make. Especially if you're doing something like consultancy.
I had a similar situation, we needed 1.5 years to fully recover from something like this, people left after the deadline, productivity dropped, everyone was demotivated.
Me and my friend drifted apart because of a project like this, only to build another company in completely different industry together later and properly discuss how emotionally straining the experience was.
Nevertheless all companies are still running and fine, but it's not something that should be treated lightly. Have a serious talk with your manager if this is affecting you and your team. Most likely the team is more valuable than the project by orders of magnitude.
I had a similar situation, we needed 1.5 years to fully recover from something like this, people left after the deadline, productivity dropped, everyone was demotivated.
Me and my friend drifted apart because of a project like this, only to build another company in completely different industry together later and properly discuss how emotionally straining the experience was.
Nevertheless all companies are still running and fine, but it's not something that should be treated lightly. Have a serious talk with your manager if this is affecting you and your team. Most likely the team is more valuable than the project by orders of magnitude.