Practice mindfulness during your routine activities. You do not need to do extra work for that and all you need to do here is to pay more attention to the things you do on a daily basis. Like while brushing your teeth, be more attentive and while taking a shower, dig deep in to your mind and practice mindfulness. You will notice that this is actually better than sitting alone and thinking about everything that is wrong with you.
The best time to practice mindfulness is when you wake up. Practicing right in the morning will set the tone for you for the remainder of the day and you can even have a cup of coffee or tea before you start practicing as there are no hard and fast rules for that.
Let your mind wander because it will only help you as you seek to be more mindful. According to research, human brain is something that cannot be controlled in a particular manner so why try to do that. Let it wander at times and clear your head whenever possible. It will help you to a large extent in your pursuit.
Keep your mindfulness practice to short burst. According to research, human mind works better this way instead of practicing through lengthy sessions and even shorter period like 5 minutes for practice is more than enough. You can practice for like 5 minutes then take rest, do your usually stuff, then come back and practice for another 5 minutes.
Mindfulness is not a luxury. According to Richard Davidson’s research at the Laboratory for Affective Neuroscience at the University of Wisconsin, human minds have emotional set point. We need to be aware of that and practice our mindfulness accordingly in order to train ourselves to be more mindful.