- Choosing the wrong (wo)man.
- Choosing the wrong profession.
For choosing the proper partner it is important (beside a lot of other things of course) that you can rely on her/him and you get sustained even in your bad times.
For choosing the proper profession, remember that you will spend a LOT of time with the work so it should be something you like. Many make the mistake choosing a profession that currently tends to bring a lot of money - which is subject to change. Lurking for the money is not enough to aim for - it needs devotion, not just commitment, to be outstanding in your job. And being outstanding is the only way of earning good money in your job.
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