Most important thing is diet for losing weight however getting into a routine with circuit training is awesome. My workout includes 2 circuits and each circuit contains 4 exercises that I do x number of times to complete one circuit. Basically I start with circuit one and I complete it as many times as I can in 7 minutes then I do the same with circuit 2. After that I do both again. It keeps things interesting because you switch up the exercises a lot. Being a part of a "fit community" can be really helpful for motivation because you enable each other. I follow other people doing my workout as well as my hobby on Instagram because it keeps me motivated and reminds me of what I want to achieve. Also having a hobby that requires you to be in good shape helps too !