I am currently 6 months into my PhD project as part of a DTP programme which means I still have around 3 years of studying left. I have really lost all of my enthusiasm and enjoyment for the project recently and I am not enjoying the working environment within the research group I am a part of. I have had lots of people notice how unhappy I have been and have suggested I consider switching to something totally new and start afresh. I have been offered a new project with a different PI I get along with really well and have only heard good things about from those who currently work with him. I've also spoken with my two current supervisors but I am not sure they really see how unhappy I am as they try and tell me everything will be okay etc. They have told me we can make changes to the project etc and see if that makes a difference and reassess in 2 months time. But I don't know if that is what I want or if starting new would be better for me. This decision has really been getting me down lately as my supervisors have been really supportive of me and I feel so bad that I am feeling this way about the project but I just have a feeling that it is not working. Other people have also warned me before that they did not think this project would work so maybe it is for the best that I change? Now would be the best time to do it as we are currently moving the lab to a new building so no lab work is taking place for at least a month meaning I can catch up on learning about a new topic etc. Any thoughts or advice would be greatly appreciated. Thanks!