Petroleum products and chemicals are a major contributor to India's industrial GDP, and together they contribute over 34% of its export earnings. India hosts many oil refinery and petrochemical operations, including the world's largest refinery complex in Jamnagar that processes 1.24 million barrels of crude per day.[171] By volume, the Indian chemical industry was the third-largest producer in Asia, and contributed 5% of the country's GDP. India is one of the five-largest producers of agrochemicals, polymers and plastics, dyes and various organic and inorganic chemicals.[172] Despite being a large producer and exporter, India is a net importer of chemicals due to domestic demands.[173]
Jawaharlal Nehru, the first prime minister of India, along with the statistician Prasanta Chandra Mahalanobis, formulated and oversaw economic policy during the initial years of the country's independence. They expected favourable outcomes from their strategy, involving the rapid development of heavy industry by both public and private sectors, and based on direct and indirect state intervention, rather than the more extreme Soviet-style central command system.[124][125] The policy of concentrating simultaneously on capital- and technology-intensive heavy industry and subsidising manual, low-skill cottage industries was criticised by economist Milton Friedman, who thought it would waste capital and labour, and retard the development of small manufacturers.[126] The rate of growth of the Indian economy in the first three decades after independence was derisively referred to as the Hindu rate of growth by economists, because of the unfavourable comparison with growth rates in other Asian countries.[127][128]
You can select any of the above fields based on your skill sets to create second income source. There is no dearth of opportunities, only thing matter is to identify the right one, which suits you. There is no shortcut to success but you have to start journey from some point. Recession can push your career 5 years back but with proper planning you can minimize its impact and remember Bad Times also don’t last forever.
You may think of a savings account as just that, savings. But it’s actually another form of income as the money in the account will draw interest. And while this interest may be small, it’s still better than $0. Eventually, you can invest this money whenever an opportunity presents itself in order to gain other income streams.  Look into Tax Free Savings Accounts if you are going this route.

Two months into my work hiatus and I’m doing well. I’ve made a little bit more than I’ve spent and I’ve worked about four hours a day on average. Ultimately, I’ll know I’m ready to make the permanent jump to a 4 day work hour when my passive income plus side incomes equal my day job income. Until then, I’m going to go back to my day job and keep grinding it out.
For a person working for a wage, their source of income is their job, or their labor (aka their time that they sell to someone). But you can own a house, and rent it out, and when your renters pay you renter every month, the source of that income check is your rental property, or your house. It would just be called rental income. If you have money in the bank in an account that pays interest, those interest payments are another source of income. We can say the source is interest payments, or we can identify the asset that is generating rent, and say your money in the bank that is generating “rent” (aka interest) is your source of income.