Frustrated and ........

Well frustrated should be enough to describe where I am at! I have been working out pretty much 4-5 times a week and as things progress I increase my workout. Things were going along well and I have to my surprise continued to lose weight. I am now 274!! Exciting I know. I am 4 lbs away from 30 lost and yet I am ready to quit and give up!! I need a rejuvenation and it doesn't seem to be coming. I thought having the Biggest Loser contest going through out the summer would be so helpful and it has but I am really struggling to say positive. For the last 2 weeks going to the gym has been harder than usual. I feel defeated because I am so tired and I know that is contributing to my lack of enthusiasm (more than usual) about working out. I am just frustrated because up until the last couple of weeks I was working out 45 minutes to an hour and these last 2 weeks I barely make it 30 minutes and not at all close to the pace I was keeping. Yes I have increased my resistance but not enough to make me feel this way. I for some reason during the week can not sleep. I know it is because of stuff going on at work and I think subconciously I can't turn it off. I guess to get it out there my management at work has decided that a position I have been in for 4 years and that they asked me to take on and I LOVE I am no longer qualified to do because I am not an RN. I am only an LPN. An LPN with almost 15 years of nursing experience and 8 of those years in the OR and 4 of those primarily doing robotics. But because I wasn't able to finish my RN I am told I can't do the job anymore. SO I think to some degree that has been weighing on my mind. There is more to the story but that is really all that needs to be said. I am trying to handle this with grace and dignity but I am not always doing such a good job and I think it is somewhat interfering with my sleep. I dont normally sleep that well during the week but the last few weeks have been worse. I think that is why I can't work out like I have been in the past. This past Friday into Sat. I slept almost 9 hours and when I went to the gym I worked out for 50 minutes and kicked butt and found out I lost 2 lbs on Sunday even after going out with my great friends on Friday night and having nachos and wings and Mild duds at the movie!!! So it is true that rest can really affect your weight loss and stress affects rest!!
 Where do I go from here? I haven't written here because I have been struggling with so much in my life at work and personally and I really feel bad I haven't been better. After even just writting this I feel somewhat better and I am hoping I can find the strength to keep going. I have come so far!!! I have much further to go and I dont' want to give up even though I feel like I can't go on anymore!!
 I came across this verse in Psalms today and I realized it was for me this week. It is Psalms 73:26
 My flesh and my heart faileth:but God is the strength of my heart and my portion forever.
My flesh and my heart certainly seem to fail me lately but I have to settle this with God and realize that despite my feeling that I can't go on, God knows I can.
I am going to keep pressing on and it is going to be hard and you may see me complain more or maybe once I get to the next milestone I will be revived. I do need your prayers and encouragement because I don't want to give up. Thanks for all the support and I will do my best to be here more. Thanks!!!