Always show on time, and don't act like you are just wanting to finish with it, stay there as long as possible.
Do your best at the work and make friends with the Co-workers, you can get help from them and to help them, you can work together and then your work will be bigger, after all the more minds the more success you get on everything in life. Don't argue with either the manager or the owner, they are the higher staff and you shouldn't argue with them, they supposed to know everything and they got this role from a reason. And the owner/manager can always fire you so that's also why you shouldn't argue with them if you want to keep the job. Always like you care and try not looking disappointed or sad at the work, after all it may ruin it a bit for the others, come in a good mode to the work and only if you are really disappointed or sad you can show it but try not doing it often.
don't ask for too many things, for example don't ask from your owner/manager to get promoted or to to get bonuses because it must come from him, usually people like it when you don't ask for such things but earn them.