Starting my health journey....

I went to the doctor recently for a physical (blood test, urine test, etc) because I haven't gone to the doctor for a check up or for any testing in over 3 years. The results came back, which were pretty good (slightly high cholesterol, vitamin d deficient). She told me to exercise and to eat better, which I've been doing since I went to the doctor 3 days ago. I want to lose weight, as I'm 10lbs away from being obese in BMI (5'7", 180lbs). I also want to eat healthier. I've been tracking my food intake with an app (Lifesum), working out for 30+ mins a day, drinking much more water, and not eating junk food.