As the college Class of 2018 ventures out into the working world, many of them will choose to work for themselves, or at least entertain the thought.

A variety of factors – less security in the traditional job market, more innovation (especially through social media), a desire for more fulfilling work and independence – has led to a steady trend toward entrepreneurship among graduates in the past 10 years.

Recent surveys of graduating classes found nearly half want to become entrepreneurs post-graduation. The Wharton School at the University of Pennsylvania, for example, saw a quintuple increase in its graduates starting their own company during a seven-year study period, according to Business Insider.

Slightly over 50 percent of small businesses fail in their first four years, according to Small Business Trends, but those startup-failure rates apparently don’t deter grads.

I am amazed at the dramatic increase in interest among students across all disciplines in starting a business.

At the same time, while it’s wonderful to have that dream, it’s daunting. Most don’t make it. Most have no idea what they’re getting into. Those who do have to embrace the whole challenge, from learning every step of the way to taking action.

There are plenty of cautionary tales they can learn from that college graduates should seriously consider before taking the leap:

You can’t do it all. 

Young entrepreneurs quickly get in over their heads when they wear too many hats or aren’t sure which hats fit. This is especially common among inventors and technologists with superb ideas but no business-building skills. Very few people are both inventors and operators. Most successful entrepreneurs must determine early on which category they fall into and find a complementary partner/company to provide the skills they lack.

Indecisiveness is crippling. 

Entrepreneurs cannot be stagnant. Lack of action due to fear of making the wrong decision impedes success and growth. There is inherent risk in starting a company, and, in order to become successful, we must be willing to take risks and make bets along the way.

Motivation is not the answer

. Working long hours isn’t enough. It’s the development of new habits that drives lasting behavioral changes. There’s a brief period of motivation required early on when improving our work habits. However, once we make a change in our behavior – be it ever so small – and it becomes a habit, it overrides the need for motivation.

College debt may slow you way down.

 This can snuff out start-out hopes. Getting access to capital is a challenge many small-business owners face, but it can be particularly difficult when you’re saddled with student loans. Being in debt makes self-financing that much tougher and taking on the entrepreneurial dream much harder. Sometimes, having a ‘normal job’ while experimenting with a new company is a good way to mitigate this burden.

Being overly optimistic is dangerous.

It’s easier to believe in your business when you’re growing it, but there will always be setbacks and you have to be prepared, starting with adding a cushion to your budget. It’s amazing, all the costs associated with starting a business. The only thing you know for sure about a planned budget is that it’s wrong – and 99 percent of the time it’s wrong in a negative way for the business.

We do not need to sacrifice our lives for a business. You have to decide early on if it’s worth all the sacrifice. It certainly can be, once the foundation is set, and if you have a passion for it. Jeremy Greenberg is the founder of Avenue Group (www.AveGroup.com), a firm that advises executives of Fortune 500 corporations, private equity firms and mid-market companies. Avenue Group builds businesses through advising leaders (Advisors division), operating early-stage companies (Ventures division), and sharing business knowledge (Educators division). He is also the co-founder and CEO of Flyte Fitness, an exercise equipment and education company. Greenberg built multi-million-dollar businesses for two Fortune 500 companies (Capital One and Avon Products). He holds an MBA from the Wharton School at the University of Pennsylvania. Greenberg serves as Entrepreneur in Residence at The Wharton School.