New to all of this

Hello to all. I am new to this site. I am a 37 year old SAHM. I have a 16 year old son an 11 year old daughter. I have already lost 50 pounds but now it seems I am stuck. The scale won't seem to move down anymore. I won't lie and say I am good at exercising because I am not. I can come up with every excuse not to exercise. I realize now I need help in order to lose the rest of the weight I want to. I have 40 pounds left to go. I want to lose weight so I can be active and healthy for my kids and spouse. Plus I want to fit into my smaller clothes. So anyone with any pointers or help or just someone to be a friend would help. Thank you.