If you are going on holiday or going travelling then the advice is to take as few valuables with you as possible. If you are going on holiday you will probably want to take some of your valuables with you such as your phone, maybe a laptop or tablet. Also often people like to take their jewellery with them as they may not get the opportunity to dress up and go out for the evening much as home so a holiday is the perfect excuse to get dolled up.
It is important to consider where you are going to store your valuables when travelling. If you are taking a mobile phone and your wallet / purse you may keep them in a handbag and as long as you keep the bag with you at all times and keep it zipped up, and keep the zip in front of you where you can see it as people often have items taken out of a zipped up bag when it is out of their eye sight.. Thieves tend to target people that are not so careful and storing goods in a rucksack is is not always a good idea as you cannot see what is happening behind you and it can easily be unzipped and goods taken.
Check your house or holiday insurance to ensure that it covers you for theft, loss or damage to your valuables.