"motivation, technological proficiency and eegerness to impress. " ......and nine women and one month do not a baby make.
While these are good attributes for a young engineer, they don't come anywhere near close to making up for many years of hard won experience. Something that is helping me transition into a more senior role is the relization that as you reach the senior levels, you are paid less for what you do and more for what you know. Many employees seem to tend to fall into the trap that managers do when it comes to engineers- the idea that if you aren't "producing" something physical, you aren't working. At the higher levels, there is a lot of decision making going on, and these decisions can be very complex in nature and require a lot of knowledge, contemplation, and fact gathering, and sometimes the confidence and courage to make and stand behind a decision that can have millions of dollars of ramifications. Even something that may seem as trivial as writing an email may take me an hour, especially if I am writing to senior management or a customer. I read and reread what I wrote to make sure that it makes sense, clearly explains what I want to say, and doesn't say anything that I don't want to say. I also spend a lot of time reading through specifications.
My background is in structural dynamics with a heavy emphasis on FEA. Lately my role is less of an analyst and more of a team leader. The young guys get to do all the fun work while I manage the technical aspect of the project and drive the design. I also provide guidance on best practices for certain modeling tasks. I am also the face of the company in front of our customer-something the young guys don't get to see or be part of. This can be a very stressful thing when projects aren't going the way the customer expects.
There is no shortcut to experience.
Also, if you talk to some of these older guys who seem to be unmotivated and wasting time, they will tell you of a time in their lives when they gave 150% of themselves to an employer until the time they realized that for their efforts, the employer gave them exactly 0% in return. I'm no gray hair, but I have been at this for 19 years now and I am much more jaded an cynical than the 23 year old idealist I was way back when.