My advice would be that a Masters degree is like a roller coaster. You will have your ups and downs in your research but that is all apart of being a scientist! There is no such thing as a 'bad' discovery.
My research dealt with using biostimulants as environmentally friendly alternatives to fungicides, for preventing dollar spot disease, which is one of the most prevalent disease that affects turfgrass on golf courses worldwide. My research will hopefully help to identify species and cultivars of turfgrass that respond positively to various biostimulant applications and therefore have a lower disease incidence. This will potentially allow golf course managers to use fewer fungicides in the future by switching to biostimulant applications, which will reduce the environmental impact that they have on the surrounding ecosystems.
I advise prospective grad students to network with as many interesting people as possible. Networking is key to finding research opportunities and gaining experiences. Even simple conversations can stimulate new ideas or help solidify original ones.
My best advice for prospective grad students would be to not be afraid to put yourself out there to the individuals you want to work with or those you believe to be the best sources of information. You are your best advocate! I would suggest doing as much research as possible on different graduate programs at various institutions, as well as the research being conducted to find the best fit for yourself. In my experience, asking current grad students how their experience was and how they achieved their goals was extremely helpful as they provided their authentic opinion.
Make your research project/thesis something you're passionate about. If you have a great idea, take it to a professor and see if you can make it into a project.
I would encourage all prospective graduate students to research their program of interest and speak directly to faculty prior to applying as this can ensure that your research goals align with your prospective advisor/program of choice.
Think hard and explore the options of different pathways you can take in graduate studies. Make the best out of grad school, be social and go to events to meet others in your program. Enjoy your time here, it goes by extremely fast.