First of all, my apologies because I tried to edit your question fixing some minor details and typos and including the particle "to" in your title and main text. I think that the relevant part in your question is about the use of have been dedicated and not about the specific presence of to or not. My suggested edit was correctly rejected.
The correct use, as stated in comments and a previous answer, includes that "to". It's important. I'm not being ironic.
Let me suggest you some equivalents
I've been working hard for years and now is time to take a good rest
I've spent my adulthood working hard and it's time to just enjoy
live/my family/my kids/surfing
And last but not least, using the correct form
I've been dedicated to my work and now it's time to left those worries
Re-answering your question in the comments, let me paste the definition of the present perfect simple [to have + participle] form from the Cambridge Dictionary
We use the present perfect simple to refer to events in the past but
which connect to the present.