So if your monthly salary is ₹ 25,000, your needs and wants budget will be ₹ 12,500 & ₹ 7500, respectively, & your investments should be ₹ 5000 monthly.
Cutting on needs is very difficult, so if your needs increase for a particular month, compromise on your wants.
They have broad market exposure and professional management, require minimal research let you invest passively for long-term wealth building.
It should be to upskill yourself for an additional income, better opportunities, & a higher salary, hence building wealth.