Well, if you are looking at earning high income, you have to be willing to spend some time learning a high income skill, there are many high income skills you can learn, some of them are easy to learn while some have a steep learning curve so it all depends on your ability to work hard, but it is achievable, there are skills you can learn within 6 months of intense focus and you'll be up and running.
Some of these skills are software developer, graphic designer, virtual assistant, professional writing, digital marketing and social media influencer, these are all skills you can learn.
Depending on your current circumstance some of these skills demand upfront investments like you have to put in your personal cash, like social media influencer, you have to host giveaways or pay other influencers for shout out and there are others that you don't need to do that.