I pray as often as I can, there's loads of really cool Saints out there, but both of these are really cool.
St Jude is who you pray to when you're worrying or have something that you're thinking about lots. He's called the Saint that helps those who are almost despairing. I prayed to him over the stress I was having with money and he sorted it. Well I believe he did. The idea is, if you pray to St Jude for something and the prayer gets resolved you tell others about what he did.
So he's a really good person to pray to in times of stress.
St Michael the Archangel is the Saint that fights of the devil and demons. So there's lots of prayers for protection and that kind of thing.
Protestant Churches are named after Saints, so you don't have to be Orthodox or Catholic to pray to them. There's a Saint out there that covers most things, so if there's something specific you want to pray for it's worth doing a search. Many have St Christopher for protection.
St Joseph, Mother Mary's husband is a good Saint, as is St Francis of Assisi who led a life of poverty and abstinence.
Did you know, ideally you should say the Our Father 3 times a day. Ideally morning prayers when you wake, other prayers during the day, then nighttime prayers. I believe prayer is a good way of connecting with your faith. I pray for others, I pray for everybody, especially those who are victims, such as those in war torn countries, countries with poverty, people in affluent countries but are struggling. Your prayer doesn't have to be about your wants and needs, I think if you pray properly you pray for a wide range of people.