Decide whether your child’s demands are age-appropriate or not. Keep into consideration your economic conditions and your child’s needs. If after these considerations, you find it important to fulfil your child’s demands, do it by all means. But if you feel that fulfiling the demand will over pamper your child, refrain from doing so. Talk to your child gently and explain to him/her why the demands can’t be met. If it is related to financial issue, tell them the truth. If it is related to age, make them understand that at a proper age, their demand will be met.
When you feel that the demands are excess and unreasonable, it may indicate underlying psychiatric problems like addiction, personality traits, Depression, or disruptive mood dysregulation disorder. This needs evaluation and intervention by a psychiatrist or a clinical psychologist.