It is a fairly common problem for many people to have trouble to fall and stay asleep. Women in their forties and fifties may notice that they have sleeping problems they have not had earlier.
Especially if women have hot flushes sleeping problems are possible.
It may be helpful to check whether you can improve anything in your home to improve your sleep. Please check whether you could try changes in your personal environment (too loud ? temperature ok ? lights ok ?).
May be avoiding heavy meals is an option you can try in case of trouble fallings asleep. Also, check whether drinking coffee, black tea, and alcoholic beverages may have an impact; it may help to avoid theses in the evenings.
This measure may also help if you have hot flushes, you may find you have less flushes after theses adjustments.
Daily exercise,if you have not started already to keep fit, may be beneficial to improve your quality of sleep. But be careful and do not exercise late at night, you may find that you will have trouble sleeping because of this, so timing is crucial.
However, if you tried all this and it does not help, it may be helpful to ask your physician whether there are any medical reasons to have sleeping problems.