New to MyfitTribe

I'm a little nervous to be posting, it's the shy side of me. Not to mention I am a little ashamed of my current weight. I was invited to come here by someone who has been a member for a while and said that I would probably be able to find the help that I need. I have a lot of questions. I will start with a little more about myself first. I am 25, 5'10", I weigh 325 lbs, I'm divorced and have a large handful of health problems. I've always been a little on the heavier side, but depression, laziness and medications got me to the point where I am now. I'm sick of feeling miserable about myself. So recently I decided to start changing things. I changed my diet to include more healthy veggies, fruits and grains and exclude fried foods, anything fast food and general unhealthy snacks. I also started working out at the gym. I go with my little sister. We do upper body, lower body, rest day, rinse repeat. However we don't for religious reasons work out on Sundays. So I've been working out 4 days a week on weights, but daily for cardio. Before starting all of this, I weighed 334 and wore a women's size 28 pants. I've already lost some weight and gone down to a loose fitting 26.

Now onto my questions. I'm feeling really motivated right now, but I guess I'm wondering for those that have been where I am before with needing to lose a lot of weight, how do you keep the motivation? Would it be better for me to work out 6-days a week on weights? Should I try to increase the weights I'm using for overall body or keep it low and just add more reps? One of the medications I'm on is Phentermine, a diet pill. Will this actually help or will it hinder my progress? A lot of times I forget to eat because of it, I'm trying to get better about it though.

Well, I suppose that's a start. I'm sure I will be around to ask a lot more questions.