hi i need to select a dissertation topic and would like to work in neurology(Parkinson or Alzheimer) related projects. the only problem is that the supervisors at my uni are offering lab-based work and i feel like my lab expertise are rubbish, not even worth mentioning. the few times i have worked in lab, things have gone wrong or things would be fine according to me but then i find out from the lecturer i have contaminated samples or used wrong products and hence messed up the results. i have not had much experience in lab work and hence feel doing a lab-based project would ruin my chance of doing a good dissertation.

i was thinking of maybe getting the data from somewhere else like a clinical trial that already in place. now i don't know i can do that as have no contacts in the health care field or clinical trials.

but my question is should i leave aside my concerns regarding my lab skills and risk doing a lab based project?
OR if i did manage to secure data from somewhere else would it look bad for my project? pls advise as to what you think i should do...