Other than hard work, what are the other routes to success?

1) Creativity/ open mindedness which include the willingness to try new ways of doing things, finding out what people REALLY want not just what they say they want, and a knack or ability to find under-served markets for services or new products.

2) Interpersonal skills, which would include networking, hiring the right people, motivating people(Some people need salt, some people need sugar you better be able to figure out who needs what and quickly),writing and speaking clearly and effectively, and LISTENING well even if it's something you don't want to hear.

3) Organizational and leadership skills. Can't motivate and organize others if you can't organize yourself. Do first things first, know what to do and when to do it. Ability to ignore or overcome the temptations of procrastination or avoidance of a problem. TRAIN, MOTIVATE,DELEGATE, REPEAT, until you have a first class organization.

Add in the 4th quality, the ability and willingness to work hard and you will have a very, very successful person. However it is a RARE individual indeed who possesses ALL of the above.

PS. Notice I didn't say anything about intelligence or education. Yes it helps some, but it doesn't matter if you can't do at least some of the above. The world is full of geniuses who are also paupers, and it is full of pompous overeducated people who live in ivory towers and don't know anything about getting along with people much less motivating them or managing them. Like it or not people are people not robots or "messy" as I say. Learn to manage the people that nobody else likes to deal with. Like the diva graphics artist who does brilliant work but can't show up for work on time and complains about the working conditions or the engineer who "knows his stuff" backwards and forward but manges to constantly insult some your best customers without even realizing it! Manage these kinds of people well and you will do well indeed.

In fact if you can do 2 out of the 4 mentioned you should do well in life, 3 out of 4 and you will do great. 4 out of 4 and you will be unstoppable. One final note, I am a financial advisor who works with very wealthy people, and I am amazed at how many of them have been "lucky", if you know what I mean.
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It depends on what you think success means....you asked about hard work so I assume you define success as having money? Some people define success as living a life where you are happy...so I guess if you can figure out a way not to sweat the small stuff and find the good in every situation then you can be success full that way. Some people define success as raising smart, polite, healthy children. Yes that is also hard work but it's also very rewarding which in return makes you successful.

Anyway, it all just depends on how you define it.
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Other routes to success are patience, who you know, your ability to sell yourself and ideas to to your target audience and having an idea, product or service that people really want and need and which can be transformed into a profit-generating venture. But success first starts with self-belief and high self-esteem.
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Connections, working capital
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Persistence
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Cheating ;-)
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Getting lucky