If you have ever had a leaky pipe you will understand how a trickle income works.
Even a very small leak will fill a bucket placed under it.

The same is true with money. Find something that adds to your income. Even if it is a small steady amount, it will eventually fill a substantial bucket.

Money flows into your household and money flows out. If the flow in is greater than the flow out, then you are building a strong financial foundation.

Generally Accepted Accounting Principles and
The God-Given Right to Be an Idiot

Deductions

• Any legitimate expense incurred to generate income is tax deductible.

• Money spent to make money is deducted from profits before the income is taxed.

A Company
A company is little more than a folder in a government office. Once you own a company, you have the right to make deductions on the income and spend pre-tax dollars for the benefit of the company.

There is No Law Against Being Stupid.
As long as the expenses are reasonable and directly related to the business, nothing prohibits you from spending money foolishly. That is to say, you can buy items you want to own, even if they are not wise for the business.
A car leased to a business is a tax deduction. A car you lease for yourself is not.
A lawn mower purchased for a rental dwelling is tax deductible; one purchased for your home is not.
As a rule of thumb, one can be an idiot for three years or $30,000 before an investigation.

Another business failure*
When I wanted to get into scuba diving`, I worked for a diver and opened an underwater recovery agency. Income from the business was used to buy diving equipment. I spent more than I made, so of course the business failed.
The objective was always to buy equipment without having to pay tax on the income.
Much of the stuff was bought at wholesale; training courses and even my gas to the dive locations were a tax deduction.

Reference:
Rich Dad Poor Dad
The Richest Man in Babylon
Robert Kiyosaki