I need advice, I don't know what to do

my boyfriend and i have been dating for a year and 8 months and in the beginning we had a hard time understanding each other as we are both pig-headed and we both are know it alls. as time went by we worked through some of our issues but there is one issue i just cant seem to come to terms with or that he just wont do something about. we always discuss things and come to decisions but when it comes to implementing the decisions then he backs out and follows his own head. it makes me feel like he firstly doesnt respect me or our decisions ans that im stupid and dont know anything. the lastest example is that his been in the commission and target driven industry for all his life and his been unhappy and stressful about this all his life. we discussed this and i told him its time to move away from the industry and he needs to look for something stable and he agreed and that was what we were going to do. then this friend comes which he doesnt even know long tells him about another commission and target driven initiative and he decides to go with this. should i just accept that he will never value my opinion and that i will always mean nothing to him and that no matter what he will have the final say and do as he pleases regardless of my feelings. i am the one that needs to pick up the pieces with him when things dont work out and i am the one that has to sit with the unhappiness and the misery but yet he doesnt even value my opinion enough to say but my girlfriend and i discussed this and i dont want to go this route anymore. what am i to do? please help.

You said what your opinion was, but you can't make him do anything. & no matter what he decides, you should support him 100% because that's what girlfriends do.

Izzy i get that i should support him no matter what but where is his support and confidence in me? its not just about the job its our relationship as a whole and things were building up and hence i left him. i need him to be able to show me that i am his number 1 but i cant when his always choosing other people over me. like for instance if we decide we not going out for the evening and a friend comes along and says do you want go out then he will say yes without consulting me or saying sorry my gf and i have plans. my biggest thing is we never argue as he refuses to argue or talk about problems and thats added to the build up. i need him to show me that he wants me as since our breakup 2 days ago i have not heard from him and his changed all his pic and pins.

Give it time and if after 2 weeks, reality still hasn't set in for him, then just forget about him. & it's going to be hard to do that. So make a fake account that you and him both have. Make one up as a guy and start having the ' new guy ' post stuff on your wall saying your gorgeous and what not, he will see it and think its real and become jealous and soon, he will want you back