Steps to find startup ideas quickly

Everyone needs to do some or other work to make their living. Some choose the job and some choose to give job. The one who choose to give job either already have company or willing to start a company. Now a days companies emerge as start-up, they either replicate an existing idea or hunt for fresh ideas.  
This hunting for ideas is an long and exhaustive task, people search for ideas on internet. But they forget that ideas available on internet are either tried by many people or are just ideas, without any feasibility.  
So don't waste your time searching the internet, YouTube or blogs for ideas rather try to find problems that people are facing through community groups, QA forums, blog comments, twitter threads etc and provide concrete solution to one of the problem in easy way.  
Because business says, provide something for which people are eagerly waiting and ready to pay.