Through out last year I find it hard to get things done with funds despite how my earning was and I find it hard to spend more on my bills around me , though I have been seeing some humans earning and paying bills with one source of income and I do ask myself how is it done
please your advice will be of help
Only having a single source of income is not a good idea. There are no sure things in life, and a job is exactly one of those unsure things. It does not matter whether you work in a company for 30 years and have an amazing track record. The company will lay you off, if they have a crappy management. Sometimes even if they have a good management. You can never know.
The best insurance is getting multiple income sources, so if one goes bad, you won't be left desperate.