Looking at this statement here, I really don't think it's ideal, if you divide your weekly or monthly income into two and invest one part of it, their is a higher probability that you might be compel to temper with your holdings in the future because investing half of your monthly or weekly income is too high, and it would definitely disturb you in financing your day to day running of your daily expenses, investing 20%-30% of your net income is quite ok, not 50%, remember that the remaining 50% is where you still remove your emergency funds from, so their is a higher probability that you may struggle in meeting up in financing your basic needs which will compel you to temper with your holdings, because you investing more than what you can do away with for a very long period of time.
Investing half of your income for investment may make you a failed investor. Because being a long-term investor is more important than being an aggressive investor. If it is possible to easily meet your daily needs with 50% of your income source, then I will not disagree with you to conduct investment activities with the remaining 50%. In this case, you have to ensure the necessary funds with 50% of the investment and manage the investment with the remaining money by keeping sufficient cash flow reserves.
But most people's income sources are not so developed. Meeting daily needs with half of their income and managing investments with the remaining half is not possible for everyone. Most people maintain 2/3 of their income to meet their daily basic needs. In such a situation, if you plan to invest with half of your income, then there may be a shortage in meeting your daily needs and this shortage may force you to sell your holdings one day. So you have to meet your daily needs properly for investment and plan to invest with the remaining money. If the remaining money is not enough for investment, you will need to improve your income source or find alternative sources of income.