When you cut someone out of your will entirely, it's known as disinheriting them. They get nothing from your estate. It's a drastic step, but one that some parents opt to take.
Bringing up estate planning can be difficult. You don't want to sound like all you're worried about is getting your parents' money. You don't want to bring up topics that make them feel uncomfortable.
When you decide to get divorced, it means that much of the estate plan you created with your former spouse no longer applies. Some things may still work -- leaving assets to your children, for instance -- but it is time to take a look at all of the documents and make sure they have been properly updated to reflect the fact that you are now single.
If you are an art collector, odds are that your collection is one of the most valuable things that you own. Not only does it have a lot of sentimental value, but you have invested time and money into it. It could be worth more than your home. You absolutely need to make sure that you work it into your estate plan, along with your other assets.
A holographic will is fairly simple. You create the document by writing it out yourself. You then sign it to show that you stand by what it says and that it reflects your wishes.