As a rule, children want to themselves the younger brother or the sister, promise to help and care for the baby. But it only before appearance of the kid. As soon as you are discharged from maternity hospital and you come back home, everything changes. On the senior child the set of the bans pours. Here to already senior kid not to joy. And why he in general wanted to himself the sister or the brother? And you do not understand, really your child cannot show an understanding droplet to the kid?
The jealousy reasons are obvious here the point is not that your child the egoist, just earlier you were completely him, you read him the book at the first desire, played with it, you walked together, and now constantly tired mom whom not prior to games. Now everything depends on whims of the tiny little man. Well how not to offend the firstborn?
For a start it is worth understanding that you will never be able to isolate from noise and other inconveniences of your kid. At you it turned out with the first child, but with the second or third it will not be. Your senior child has too a need to jump, run and play, it is impossible him constantly to punish for it, so you the hands will incite the senior child against younger.
Kind of you worried about the baby, do not forbid the senior child to touch him. You should not force too. Such close contact plays an important role in finding of mutual understanding between children. The same concerns also the help in care for the kid. The senior child is not obliged at all to you to help with it, but if he wants to make something for the baby, do not forbid.
Try to reach compromise. If the senior child, wants to take a walk longer, be late a little bit longer. Even if the kid is capricious and wants home, sometimes and the will of the senior child has to be considered. So the younger child since the infancy will get used that he not only whose opinion is important.
You praise the senior child, hold up him as an example to younger. Especially when younger will a little grow up and will begin to understand what you tell him. For example, "Look what brother the good fellow, everything ate", after such words and to the senior it will be pleasant that he was praised and younger will try to eat everything to deserve a praise.
Of course, the jealousy will be present, but you as mother have to help the child to overcome it. As you can see, it is not difficult at all.