It sounds an absurd idea to succeed in business without taking any mental pressure or doing hard work. Business is considered to be such a profession which requires both physical and mental involvement. In most cases, it can not give you expected return until you yourself whole-heartedly attempt to uplift it. But this does not apply every time. You might be able to succeed in business without really trying or making yourself involved in business activities. For this easy task, however, you would need something difficult to achieve: Patience.
Ok, getting to the point..
Long-term Investment in Stock Market

If you invest in a stock market for a long-term, you will succeed to gain through the business without trying a lot. What you do is just invest a sum of money for buying a company’s shares. Then, you will have been doing other works, uncared about the investment. After a long period of time when you check your status of your investment, you will find a good sum added to your initial investment. You actually did nothing–no mental or physical endeavours– during the time, however, you got a good return.
Although investment in stock market has become very popular these days, but you need your mental as well as physical involvement in short-term stock trading. While investing in the stock market for the long-term, all the hurdle is to pick the correct Company. After that, it is more like a passive income.
Real Estate

Like stocks market, investing in real estate may be another option for you to succeed in business without really trying hard. In the business, you should first of all invest money remaining in the given criteria. The portion of your shares increases along with the profit of the company. For the task, you need neither to be responsible for running it, nor for its any other consequences. Your accountability is limited to the shares you have purchased. After a certain time, you may find your money as multiplied if the company has has gone in profit.
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Fixed Deposits

Depositing money in banks do not necessarily provide you with a very good return, however, it certainly is a way to succeed in business without really trying or doing physical or mental activities. If you have a large amount of money and do a fixed deposit in a bank, you can get a good return after the fixed time. For example, if you deposit 100 thousand dollars for 3 years in 5% annual interest, you will get $115 thousand when you take it back. No others actions of you are necessary for the increment. You can also have no mental tension of losing the money as banks are reliable places for keeping money safely.
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Bonus option: Lending to Individuals
By lending money in interest to individuals may also help you to succeed to earn more without really trying so hard. For doing this, you can lend your money for a certain period of time to trustworthy persons, who are in need of a loan. Before giving the loan, you do an agreement mentioning the interest rate and the time of returning it to you. In the paper, you should have included all the necessary conditions not exceeding the current legal provisions. But it is is a bit more risky. Even after making all necessary arrangements, too, there still remains a probability of not getting the money back as expected.
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This happens because all the people in the world can not have positive intention. Likewise, the individual may have gone bankrupt and may have no other sources to pay your loan. In that condition, you may fall into trouble. So, you need to be more careful before lending money to an individual. And yeah, this is not the most effective way to choose if you want to get rich quick.
Designating a Manager
In order to run your business, yo can appoint a skillful manager with overall responsibility to handle things. This makes you mentally and physically free from the burden of day-to-day activities and enables you to succeed in your business without really trying by yourself. You are then even free to do another job of your interest. But you should be receiving the company’s business status time-to-time and giving feedbacks without interfering in the efforts of the competent manager.
There are literal ways to succeed in business or investment without really trying a lot or making yourself involved in them. But still, you can not do it without investing. Therefore, if you are able to invest, but do not have time or desire to do any business being personally involved in it, you can look carefully at the options mentioned above.
Good luck