Increasingly my simplistic answer to this is ‘NO’. Career planning seems to be an oxymoron.
Career surfing might be a better metaphor. You never know what the weather is going to be like, it changes while you are surfing, its sometimes difficult to stay upright and you can’t guarantee your direction or speed. And sometimes you fall off!
The latest US stats tell us that people change their jobs every 4 years, men have over 11 jobs in a lifetime and women nearly 11. My guess is that the same trend is here in the UK too. What you need to know are your motivated skills, what is important to you in life – your values – and the work life blend that you want now. The latter will change according to circumstances. You need to spend time with people from whom you can learn and who you can help too. You need to be open to possibilities all the time – however satisfied you might be now. You must believe that every job is temporary. You own your own means of production. You can develop them, hire them out, use them to create your business, teach others to use them. Karl Marx would not have recognised this as in his time the factory owned the means of production and you would have been one of the instruments in creating wealth for the factory owners. Today, for very little outlay sometimes, you can be the factory.
If you do all of these things then you truly will become the architect who develops your own future.