Grandma here. It's not easy or pain-free - until it's fully established and then its such a piece of cake you wonder how it was ever a problem.
If you're at the new, in pain, will it ever work stage....
Change your attitude:
You're thinking of food, meals. No. Think 'breathing'. Your baby breathes to stay alive. Your baby takes the nipple to stay alive. Not 'feeding every few minutes' but being close to mother at all times, suckling at will. 24/7.
You're thinking 'there are two people here'. No. Only one. Your body and the extra bit it made, which is as much a part of the original body as is your arm or leg. You don't try to put your arm or leg down, or leave it in a cosy cot overnight or any such idea. It is part of you. So also the new extra bit, your baby. From now until s/he walks away.
Keep the pressure off - limitless access to the breast will take away a lot of the baby's urgency. Good positioning, changing positions, will ease the strain on your nipples. The less 'natural' something is, the less you want to use it - so ban 'nipple shields' and sprays, and go for clean, cool water to soothe sore nipples. In my day, we used ice (in a hanky) but people are iffy about that now.
Right, Elephant, off the thread. Grandmas are peripheral, they should always know when it's time to go.