It would apppear that your employers have a more positive slant on your job than you do, and this is something you need to address. If your problem is personal - not being accepted - havea word with your immediate supervisor and see if there is a way forward. Personal issues that involve personality clashes are often down to communication problems, and can be resolved once both sides get together and talk things over, but do that via your supervisor, rather than tackling it yourself. If you feel the job is not right for you, why not speak again to your supervisor, and ask if it is possible for you to be re-assigned to something more suitable, but make sure you have a specific idea of the problems you face, and an idea of your future career path, which will show intention to do the best thing for you and your employer, rather than some vague notion that things are 'not for you'. Both these solutions offer an answer to our difficulties, and neither of them involve resignation, which is still an option once these avenues have been explored. If you have tried personal and professional redevelopment, and not been successful, then you should find you can resign without feeling guilty.