the have to's, want to's and must's

"want" is simply something that a person would like to have. Want to would be if the party in question is somthing to which would fancy your interest.

"Have to" is used to express certainty, necessity, and obligation.

Need To:
A need is something that is necessary for humans to live a healthy life. Needs are distinguished from wants because a deficiency would cause a clear negative outcome, such as dysfunction or death

Must:
1 a : be commanded or requested to b : be urged to : ought by all means to
2 : be compelled by physical necessity to : be required by immediate or future need or purpose to
[etc etc]



Remember these when someone tells you , you have to do somthing. or you need to.