As a Creative Projects Manager, I have heard first hand the frustration of those nearing the finish line, leading to a combination of a complete loss of vision and an attitude of, 'whatever! To be honest, this combination preys on your desire for it to 'just be over and done with'. Not healthy or productive!
For music artists, this usually takes the form of a, 'drop the track and see what happens' attitude, with no pre-promotion or marketing campaign in place. For events, the feeling may be, we are here already, let's open the doors and hope for the best.
Again, neither are healthy or productive!!.., but without advance preparation, a good understanding of the deliverables for your project and key risk assessment, this is where most Creatives end up. Sometimes this much-needed expertise and guidance are provided by a team throughout the process or by crucial individuals at critical points of the project.