Voor mij is slapen belangrijker dan televisie kijken.

Voor mij means for me / as far as I'm concerned / personally. It sets up the sentence from the speaker’s point of view.

So this sentence is not structured as I think..., but more like:

For me, sleeping is more important than watching television.

A very natural alternative would be:

Ik vind slapen belangrijker dan televisie kijken.
= I find sleeping more important than watching television.

The version with Voor mij puts extra emphasis on the personal perspective.

Yes. In Dutch, an infinitive can often function like a noun and refer to an activity in general.

So:

• slapen = sleeping / to sleep as an activity
• televisie kijken = watching television

This is very common in Dutch. Where English often uses an -ing form, Dutch often uses the bare infinitive:

• Roken is ongezond. = Smoking is unhealthy.
• Lezen is leuk. = Reading is fun.

So in your sentence, slapen is the subject of the sentence.

Because these infinitives are not being used after a verb that requires te. They are naming activities, not forming something like to sleep in the English sense.

Compare:

• Ik probeer te slapen. = I try to sleep.
  Here te is needed.

But:

• Slapen is belangrijk. = Sleeping is important.
• Televisie kijken is ontspannend. = Watching television is relaxing.

In your sentence, slapen and televisie kijken are activity words, so Dutch uses the infinitive without te.

Belangrijker is the comparative form of belangrijk.

• belangrijk = important
• belangrijker = more important

Dutch often forms the comparative by adding -er to the adjective.

Examples:

• groot → groter
• klein → kleiner
• belangrijk → belangrijker

So:

slapen is belangrijker dan televisie kijken
= sleeping is more important than watching television

Because dan is the standard word used after a comparative.

So:

• groter dan = bigger than
• duurder dan = more expensive than
• belangrijker dan = more important than

This is different from als, which in standard Dutch is used in comparisons of equality:

• even groot als = as big as
• zo belangrijk als = as important as

So in your sentence, dan is correct because it follows a comparative: belangrijker.

In Dutch, when an infinitive phrase names an activity, the object often comes before the infinitive:

• boek lezen = reading a book
• koffie drinken = drinking coffee
• televisie kijken = watching television

So televisie kijken is the normal order.

But when the verb is conjugated in a main clause, the order changes:

• Ik kijk televisie. = I watch television.

So:

• as an activity name: televisie kijken
• as a normal main clause: ik kijk televisie

Because televisie kijken means to watch TV as a general activity, not to watch a/the television set.

So here televisie behaves a bit like a general uncountable activity word.

Compare:

• televisie kijken = to watch TV
• naar de televisie kijken = to look at the television set

That second one is more literal: your eyes are directed at the device itself.

So in your sentence, televisie kijken is the idiomatic expression for watching television.

Yes, absolutely. That is also correct and natural.

Both are possible:

• Voor mij is slapen belangrijker dan televisie kijken.
• Slapen is voor mij belangrijker dan televisie kijken.

The difference is mainly emphasis.

• Voor mij first: emphasizes for me / personally
• Slapen first: emphasizes sleeping

This is a good example of Dutch word order flexibility in main clauses. But remember: the finite verb still stays in second position, so after Voor mij comes is.

Not exactly, but they are close here.

Voor mij often means:

• for me
• personally
• as far as I’m concerned

It gives a personal perspective.

In mijn mening is not the normal Dutch way to say in my opinion. More natural Dutch options are:

• naar mijn mening
• volgens mij
• ik vind

In this sentence, voor mij is not really about a formal opinion; it is more about personal priority or personal perspective.

It expresses a personal preference or personal priority, not an objective universal fact.

That comes mainly from Voor mij. The speaker is saying that, in their own case, sleeping matters more than watching television.

Without that phrase, the sentence could sound more general:

• Slapen is belangrijker dan televisie kijken.

That version can sound like a broader statement, almost like advice or a general truth. Adding Voor mij makes it clearly personal.