They are only burden for you. That kind of decisions will make your life much simpler when you know what 'not to do or aim at all'.
Following diagram is just an vague example:
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| Ambition level vs. Required practise |
This is still double-edged sword. Things are not always clearly black or white.
Since many of us (including me, sometimes :)) think that "it's too late to start" some new career, venture or hobby.
As i already mentioned in the first line: in a way it's true, if your are 45 years old and if your new career (e.g. mandatory license + training) or hobby requires e.g. 10 years of disciplined practise 7 hours per day, then it would be unrealistic, and better to consider other options.
However, there is so much (undervalued mostly by ourselves) and hidden pieces of art in our own's desk drawers. These masterpieces are waiting and entitled to be seen and heard by the world.
Let me give some examples; it'd be waste of time to try to be olympic runner at age 35+ and you have never ran before. On the other hand, it is totally realistic and possible e.g. to study a new degree or to start to work as a professional photographer.
It all boils down to two key questions: what's your ambition (target) level vs. how much you are able & willing to practise in disciplined way. Think about that.
