1) Don,t depend on other opinion that this niche is on trending so, learn it, instead research about that niche in market and find your intrest in that specific niche.
2) Every people is diffrent in their intrest, emotion , temprament and skill. Everyone has its own super power. so, find your hidden intrest and start taking action on it.
3) Intrest is not only the one thing that is important.Also keep researching on market.
4) understand your client, bulid a good relationship through your good communication on work and also on that thing that your client want to talk about. Take them comfortable to work with you for better understanding
5) upgrade your skill according to the market, learn new tools and skills that will dominate you , there is no concept of compitation and saturation, if you are giving quality work.
6) take the ownership of your mistakes, take them sriously and learn about the
7) Always think about to solve BIG problems of your clients which will give you more respect and long term relationship. REMAINDER: But the work is in quality not in quantity.